Timing belt broke, put new belt on ran compression test n only 2 cylinders were low, pulled head, replaced all valves in those cylinders, runs new again👍

@TheGaginator

2 жыл бұрын

Great job!

Never thought of doing a leak down test like this. Thank you for the info, well presented.

@TheGaginator

Жыл бұрын

Thanks for watching!

Everything everyone else said. First video I found that helps you identify exactly which one of the main causes it is. Thank you. I'm gonna go hopefully pinpoint my problem.

@TheGaginator

Жыл бұрын

Thank you for the comment, and good luck sir!

You can do a wet compression test to confirm pistons went bad.

Very good job of analysis. Good technique. You gave be several ideas I had not thought of. You are probably correct, worn piston rings, not worn out, just worn more than the other 3. If you had a bore scope you could see if it was due to cylinder scaring versus ring wear, not that it really makes much difference. SInce it was 2 cylinders and not one, probably piston wear. You are also correct in your compression tester, get a good one. OTC does make good products; typically more expensive but better quality.

@TheGaginator

Жыл бұрын

Thanks for the comment! I do use the OTC tool most of the time. It has better adapters

You're the man!!! I'm using this method to diagnose my 83 Honda shadow 750. You can't get parts for them anymore so this could save me $$$$

@TheGaginator

2 жыл бұрын

Hope it helped!

This is the best video I have found so far to diagnose the cause of low compression. Appreciate your haed work.

@TheGaginator

3 жыл бұрын

Thank you so much!!

Great explanations! I was worried I wouldn't get it cause you talk fast, but those illustrations at the end were really helpful.

@TheGaginator

5 жыл бұрын

Thanks! I get excited and need to calm down sometimes haha.

@johnhenderson9328

4 жыл бұрын

Slow down the video

@Devo1987

3 жыл бұрын

Bob Ross lol jk

Thanks Michael

Thats the info I needed to know. Thanks for the vid this will definitely help me out

really loved your video! Thanks!

@TheGaginator

Жыл бұрын

Glad you enjoyed it, thank you for the comment!

Hello there! Amazing video, thank you! I have Skoda fabia 2005 1.4 75 hp with gasoline engine. I notice that when i park the car on a slope, around 25 degrees, on the first gear, the car is starting to roll down on stages. It's like the engine comression is gone. I read that when it starts to roll down like this, its already started to go down itself the car depot. 😃 Well the engine work so fine, without any unusual noises with changed oil, water pump, new timing belt. For about 7 000 km that i drove, the oil level went down just a little bit. I will bring it to measure the comoresion level and see if the engine is dying

@TheGaginator

2 жыл бұрын

Thank you! If your engine runs well, it most likely has low compression evenly on each cylinder. Which is not that bad at all! It is much worse to have unbalanced compression. Good luck with the Skoda, we cannot get those here!

I'll definitely have to try this, I have low compression at idle in my Chevy 4.3l v6 which causes a misfire.

@TheGaginator

11 ай бұрын

I hope you get it figured out!

I have a 1996 4.0 chrysler/jeep inline 6 cylinder which i did this test on. The engine is out on the ground without exhaust or intake attached so its virtually impossible to warm engine before a compression test which i also did & I'll get back to that in a minute. But first, using your test all 6 cylinders leaked with piston @ TDC but all 6 DID NOT leak with piston @ between 8 - 12 degrees before TDC. Just a miniscule amount of air made the engine turn with engjne pistons between 8-12 deg. BTDC. I thought this was odd. I'm wondering if a streched timing chain would cause this? Now back to the compression test. I had to do the compression test with the engine cold. The standard on this type of engine calls for between 120 & 150 psi. I think that is suppose to be with engine warmed to operating temp. The readings i got were between 185 & 215 psi with engine @ ambient air temp. I wasn't aware there was such a large difference in psi between cold & hot engine temps. Any insight would be appreciated. Thanks

Good video

@TheGaginator

3 жыл бұрын

Thank you!

Thank you brother, you saved my day

Did you had engine oil consumption due to this problem?

My car crapped out on me getting off the highway. Before, it was burning engine oil like crazy fast. I changed my spark plugs and put in oil. This was before my car crapped out. Still doesn't start. Took it in to a mechanic who said there was low compression in cylinder #2 and #3 (both around 55PSI - should be around 165) The end result was that I would need a new engine...Does that sound right? Is there anything else I should check? Maybe take it somewhere else for a different evaluation?

Boy I tell you what...👍

Interesting Thanx

If leaking past rings, be sure to, next, put a FEW DROPS of oil in suspect cyl. Try compression test again (wet comp test) then, turn engine over/run for a short while- check compression again. If it comes back up, and the plug that was removed from cyl was fouled (due to ignition issue having occurred), chances are the rings/cylinder walls were "washed down" by unburned fuel during the misfire event, causing the ring/s to loose it's seal. The oil you've added will re-seal and fix you're problem (IF washed down rings was indeed the cause). Replace plug w/ new (or clean w/ lots of brake clean. Using fouled plug may start the fouling/misfire process over again.

@fatvegan733

Жыл бұрын

Oh, and to poster of video - good job. Should help a lot of ppl out there.

@TheGaginator

11 ай бұрын

GREAT info here!! Thank you for posting it

What a fantastic and informative video. I'm having low compression on one cylinder on a 98 Mercruiser 3.0. The suspect cylinder had air going through and out of the carburetor and no other cylinders did that. There isn't anywhere that I can see to check for intake valve leaks. Any tips? This boat has 50 hours on the engine but sat for over 10 years in a barn. Any help or tips is greatly appreciated.

@TheGaginator

Жыл бұрын

reply

Video moved here from my firearms channel. Hopefully people can still find it.

Best video so far. Thank you. One question though. How would you go about cleaning exhaust valves without taking the engine apart? I know you can clean intake valves by taking the intake manifold off, but I don't understand what would you do with the exhaust ones?

@TheGaginator

5 ай бұрын

Thank you! Unfortunately exhaust valves don't usually clean up, even if you can get to them. The burnt carbon required tools to remove it usually

Brilliant

@TheGaginator

2 жыл бұрын

Thanks!

Did this test. Thanks for the info 🤙 Between cylinders 1 & 4 I have a breach with air. Also only cylinder leaking to exhaust is cylinder 4 but on TDC exhaust valve is open. G16B Vitara?? Car will not start, low compression. Any ideas 😂

@TheGaginator

2 жыл бұрын

If its a suzuki, its no good haha. I have replaced more of those engines than I'd like to with way too low of miles. Was the engine overheated? #4 exhaust valve could be sticking in the valve guides, and the head gasket is breached between 1 and 4

What would cause a cylinder to register 150 pounds during a compression check, but then when engine is running the psi drops to 20-25 psi? Cylinder 4 of a buick 3.8 v6. Thanks.

i kept getting misfire fire from the same cylinder after spark, ignition and injector replace and got all good compression but ended up with a leaking head gasket in cylinder two. So u can't really trust these test except doing a reverse power flush through the radiator and see if water is comming out from the cylinder , which mine did... and stick a camera down the cylinder

@TheGaginator

11 ай бұрын

A pressure test through the cylinder should show pressure in the coolant system if you can put a gauge on the radiator or degas bottle. Alternatively, yes you could put a pressure tester on the cooling system and then pull the spark plug to see if coolant comes in, but that is more risky because if you dont pull the plugs, and then start the engine, you could bend a rod by hydrolocking if too much coolant is pushed into the cylinder and not removed

@hjkjccdggjhvb

11 ай бұрын

@@TheGaginator yea, u just got to know what your doing ... It's a risk , but when u have no choice to find out the problem and everything looks good but problem is still there u kinda have no choice to do that radiator test through the cylinder ... nobody on youtube actually have a video on doing it , maybe u can make one .. would be helpful for others to learn , thks

My number 3 cylinder compression is zero. This happened overnight. Also the truck was burning oil and quit burning when this happened. The other 5 are good. I can't afford to rebuild. I need to do the leak test.

@TheGaginator

Жыл бұрын

at 0psi, the engine needs to come apart. There is no way around it.

I have a 2002 e 150 van 4.2 6cyl ..#3 cylinder had oil on the plug so may be valve cover boots but today I was told that the 3 cylinder had no compression...do I ask for leak down test or what..I need confirmation to get to next step Thank you

@TheGaginator

3 жыл бұрын

I would 100% ask them for a compression test print out.

Also could be carbon build up on the rings pour some seafoam into that cylinder or all cylinders and let it soak overnight and then redo the compression check

@TheGaginator

2 жыл бұрын

Correct ^ I did actually do a video on marvel mystery oil, engine restore, and another one called Auto RX.

@kami_dred7319

2 жыл бұрын

Carbon buildup can cause low compression? Can it be reversed?

Hello Gage! new subscriber here! I just have a question when you said that there was air coming out from the oil filler, what could be a detailed reason why air would come out from the oil filler? and what if the scenario was the car was idling and we remove the oil filler cap and you could visually see, and feel air and gas coming out from the oil filler? Is this a bad sign of something? I hope you answer my questions! thank you for the information from this video. God Bless

@TheGaginator

3 жыл бұрын

The mostly likely reason for what you are describing is a clogged PCV system. The Volvo engine design used a catch can that is very commonly clogged. I have never had a volvo that didn't need it replaced. Its a simple task that involves removing the intake manifold. It is possible however that you are having piston ring blow by causing this as well, but since the PCV catch can system is so commonly clogged on these engines, id check there first!

@ironman8727

3 жыл бұрын

@@TheGaginator Thank you Gage! New information gathered from you! This really helped me alot, I wish you an awesome day 🙂

Great information! I've quite recently gotten very interested in internal combustion engines and I was wondering if there are any additional tests you can do to try and exclude or confirm the possibility of a crack in the engine block or head? I'm assuming a warped head is impossible to test for as it causes the exact same problem as a bad head gasket - correct? I was looking at buying a car with a "blown head gasket" for very little as a project to learn more about engine disassembly etc but short of taking the head off - can you get any closer than this to confirm it's not something else? Great info nonetheless very useful!

@kirbytabor9956

2 жыл бұрын

Leak down test with smoke will tell you all you need to know👍

@TheGaginator

Жыл бұрын

reply

@identifiesas65.wheresmyche95

Жыл бұрын

@@kirbytabor9956 Ah thanks, I'll look that up!

Could I use this system with a busted timing belt, and just turn crank and test each cylinder one at a time. I'm trying to see if any of the valves were damaged when belt broke?

@theboostedfamily7145

4 жыл бұрын

ChromerSatanas just google if your engine is a inference engine or non

I have a 2009 Toyota Passo which has no compression in the middle spark plug. My mechanic suggested that I change the entire engine. Is there a more cost effective alternative?

@thebridge5483

3 жыл бұрын

Unfortunately no cause you have to tear down the engine to fix compression problems the labor is pretty steep.

@Domin17maru

3 жыл бұрын

Was your Passo throwing white smoke out of the dipstick by any chance?

@Rick-gy8fz

2 жыл бұрын

What did you end up doing?

I just made the mistake of pulling apart an engine before doing this assuming it had bent valves, they don't look bent at all and now I don't know whats wrong with it lol!

@Dat550go

3 жыл бұрын

Your Compression rings needs replacement.

Hello there i have a question. I have a golf 7r 2.0 tsi and i have low compression on cilinder 1 and all the spark plugs are full of Carbon on it what do you think is the problem . Sorry about my english but greets from belgium

@TheGaginator

Жыл бұрын

Hi there! the problem could be several things. You will just need to go through the proper testing to identify the cause

I have a 2003 toyota v6 57000 miles. Wife's car short drive to work. Low compression developed a year ago after 2000 mile drive, then drove 2000 back. No oil smoke, spark clean, coil, injector replaced, no gas smell on spark, cylinder head- no carbon. Dealership said 100 psi on number 2 cylinder as also shown on my computer reader as misfire. 150 psi on other 5. Engine light on. Runs fine. A little rough at idle. Dealership suggested a new engine. They did not check anything else. Just stopped at compression test. As a precaution, I'm going to replace the oil solenoids. Given this info, what do you think?

@TheGaginator

Жыл бұрын

beep

My civic 2000 has 120 psi on 4 cilinders but ir doesn't consume oil, antifreeze and it doesn't overheat idk what makes the low compression

@Charlitos1988

2 жыл бұрын

and what was the final verdict?

Hope u answer... It's a honda civic 2002, 4 cylinder 1.5L D15B engine. I have low mileage due to low compression and smell fuel out of exhaust. My initial diagnosis is, it's not the piston ring or the head gasket is bad becaus I don't lose a single drop of engine oil. What might be the cause. I got around 110psi almost in all cylinder.

@TheGaginator

2 жыл бұрын

Does it run low on coolant? It could be burning coolant through the exhaust

@nahid1981

2 жыл бұрын

@@TheGaginator no loss of coolant, no loss of engine oil..only low compression (around 110psi in all cylinder). Injectors ok, fuel pump ok..

I have a 2012 ford fiesta 1.6l and it has low compression on the 2n3 cylinder.. also it's a duel camshaft and the exhaust camshaft keeps popping out of time.. any ideas??

@TheGaginator

2 жыл бұрын

That is not an engine that I have worked on before. It could be several things. The low compression could be related to the exhaust cam timing for sure. Need to know why its jumping time. The tensioner could be bad, chain stretched, or the cam gear teeth could be worn down.

@Flavor-il9tc

2 жыл бұрын

@@TheGaginator thank you for this info

a bit of bloby is perfectly normal, redo your procedure with a cylinder that is known for a good compression and compare the results, Usually, when the blowby is important, the top compression ring is broken or the cylinder is scored.

@TheGaginator

2 жыл бұрын

Correct about some blow by. Good info

Glove Sensor ist genious

@TheGaginator

Жыл бұрын

Ha thanks! Things you learn when you have to work by yourself!

Im Stuck!!! I have 2 adjacent cylinder with NO compression. I do not have any coolant/Oil mixing I did put a latex glove on my exhaust. It did fill with air I used a borescope and found oil siting on top of of one cylinder of the 2 with NO compression. All others had carbon build up on top of pistons. Something tells me I have bad valve seals. I would like to know with certainty what the issue is. Do I have a bad head gasket? ***Doubt it. No Coolant mix. Do I have bad valve guides? ***Yes, because I see oil on Piston Top Do I have carbon build up on my Valves, unable ling them to seal properly? (***Unable to tell with Borescope since it does not turn up on itself) Could it be my Valves need to be adjusted? (Now that I haven't checked although when I placed it to top dead center to do a leak down test, rockers did not appear to apply any pressure on Valves) Do I have more than 1 issue at bay? Car has close to 200,000 miles. 1995 Honda Del Sol with a D15B7 Engine. I Don't know its service history. I bought it with this present condition. Can someone help me narrow this down?

@TheGaginator

3 жыл бұрын

I'd bet you have burnt or stuck valves. You can pull the valve cover to make sure they are moving. 2 adjacent cylinders could have a head gasket breach between them

Vortex 4.3 6 cyl with 5 at 0 and 2 at 110 the rest at 138 respectively. Rings?

@TheGaginator

2 жыл бұрын

o psi is not going to be rings. That's something else

Would it be possible to get compression and have a burnt valve? My mini cooper s r53 is running on 3 cylinders and is sucking through the exhaust

@TheGaginator

5 ай бұрын

Yes you would have SOME compression. but not alot.

@lutonview3854

5 ай бұрын

@@TheGaginator right, I've got 125psi on 3 cylinders and 95-100max on 1.the car flags up with a cylinder 1 misfire but no.3 has the lowest compression. There's no excess gas coming through the oil filler/dipstick just vacuum. I'm basically on the ledge about taking the head off.

What does it mean if you do a compression test with all the spark plugs out and the gauge keeps slowing dropping once you are done cranking the engine over??

@TheFoMoCo1903

3 жыл бұрын

Schrader valve on the hose or gauge/connections are leaking. Gauge should not drop after a compression test until you release the pressure.

@TheGaginator

3 жыл бұрын

THIS ^

I have citron 1.4 petrol compression is 175 on 3 cylinders but 55 on 4th cylinder. Would I still be able to drive the car?

@TheGaginator

3 ай бұрын

The engine needs a rebuild, so the damage is already done.

What symptoms were present that caused you to do the test in the first place? What was later done to the engine and how well did it work?

@TheGaginator

2 жыл бұрын

This engine was suffering from clogged/stuck piston rings. Mostly the oil control ring. A treatment of Auto RX was the best thing, and I did an engine restore with CSL treatment as well. kzread.info/dash/bejne/dpNtp6pmltOugLw.html

Hi,I'm Joy. My friend has a Lincoln Navigator 1999 and it's sitting on its on back wheels. She says it's the compression system on it. Do you have any ideas on how I can help her with this problem please

@TheGaginator

2 жыл бұрын

Yes, the air bags for the rear suspension system are the problem. Its a very common issue. I would replace the air bags with coil springs and shocks instead

@mrsfloyd8833

2 жыл бұрын

@@TheGaginator thank you

how would u know an exhaust valve was bad and fill a glove with air if you have weepholes in your muffler? Wouldn't it leak there first

@TheGaginator

4 жыл бұрын

good point, The small weep holes will let some air out, but the glove will still inflate to the point that it would be noticeable. I clearly shows this in the video i think by turning the engine to open the exhaust valve, and blowing up the glove at the end.

@veronicac5684

4 жыл бұрын

look at 8:25

Couldnt a broken valve spring also cause 0 compression

@carlosgarza4608

3 жыл бұрын

I am working on a 2016 ford f150 twin turbo 2.7 how much compression does each piston need to put out

Will low compression shows in scan tool? Does it have code on its own?

@TheGaginator

Жыл бұрын

Now. An ECU has no way of detecting cylinder pressure. It uses differences in pulse speed of the camshaft and crankshaft sensors to determine what cylinder is misfiring, but it wont tell you why unless it is directly ignition or fuel injector related.

I have a 2004 mustang v6 40th anniversary with 200,500 miles no compression in some cylinders and if there is its not much some do go up tho also on start up its very weak and sound so bad and has a ticking noice no power when give it gas

@TheGaginator

2 жыл бұрын

You probably need to pull the heads to find the issue. it's going to need a rebuild

@aaaqq5378

2 жыл бұрын

@@TheGaginator thank you yea i talk to a some what mechanic he said he would have to take the heads off and some thing would need to be rebuilt

Couldn't you tell its rings by blow by?

I got 210 compression would that be bad?

@TheGaginator

3 жыл бұрын

210 is awesome if its the volvo engine.

Why dont just change oil catch can? Should be solid reason.im Just curious.

@TheGaginator

3 жыл бұрын

I changed the catch can later on. They dont last long on these cars it seems.

So, did you put this car down for good? Or is it just backlogged for now?

So Engine Restore won’t solve my low compression problem if it is a burnt valve. No sense in wasting money on getting Engine Restore added to a 2007 Hyundai Tucson with 260 thousand KM on it, right?

@wpafreddy

4 жыл бұрын

Allan Chu I think your correct, I believe engine restore is for head gasget issues

@YuriDontPlay

4 жыл бұрын

THICC daddy F is there no way to fix this?

@wpafreddy

4 жыл бұрын

YuriDontPlay If you 100 percent know your issue is valve related or in the head of your engine, I haven’t heard of any fluid fix BUT usually that’s still cheaper / easier to fix than a new motor i

What happened if petrol car cuts the power

@TheGaginator

11 ай бұрын

Could be anything...

What is engine compression in general ?

@95TurboSol

2 жыл бұрын

It's different for every car, check google for your make and model/ engine model then compare with what readings you get. For my Honda engine it's 150PSI.

What if the petrol car cut the power

@TheGaginator

11 ай бұрын

Could be anything...

Probably the exhaust valves

@TheGaginator

2 жыл бұрын

In the case of this volvo, it was piston rings, but exhaust valves are very common as well

@JeepTeriyaki

2 жыл бұрын

@@TheGaginator ah ok... Well hopefully they didnt come out of the ring grooves and score the cylinder walls. That's always is fun!! Thanks for responding.

56,057 viewers just had this on their phone looking into the engine bay and didnt leave a like >;o

@TheGaginator

3 жыл бұрын

Haha dang goons!

Hopefully this save me some diag time, pulling the head off this dodge would take for fucking ever

@TheGaginator

2 жыл бұрын

Hopefully it was helpful!

i got 0 compression in all four cylinders, hopefully i did the compression test wrong

@thomascox4030

4 жыл бұрын

RandomGamer I’d say you did it wrong. Highly unlikely you’d get 0 on all of them. Unless your car is missing all four pistons

@1000blabbities

4 жыл бұрын

Lol. "hopefully I did it wrong" is not something you hear often

@oscarprinting2421

3 жыл бұрын

thomas cox looookoooooooooooopppppppp

@CashApp-HelpMeStayAlive

3 жыл бұрын

😂

I see you dont answer any questions. My bad.