Hard Start! 1976 Porsche 911 Repair

Автокөліктер мен көлік құралдары

It has been eight and a half years since we last saw this car for an engine rebuild. The complaint was a hard start cold that had progressed to running rough as well. It was a very hard start, and we had a lot of trouble starting it to get into the shop.
After looking at the systems and diagnosing the problem, we fixed the car.
To fix the hard start, we eliminated suspects one by one and found the electrical system was the main problem.
After the hard start was fixed, the car got some much-needed service and is running sweet.
Thanks for watching.

Пікірлер: 20

  • @kevinthomas8768
    @kevinthomas8768 Жыл бұрын

    Thanks for taking the time to teach us about our cars, especially those pesky intermediate ones that are so frustrating.

  • @klassikats

    @klassikats

    Жыл бұрын

    Your Welcome Kurt

  • @MikesRestorations
    @MikesRestorations Жыл бұрын

    Nice Kurt! Much more sensitive system than the earlier cars. Great diagnostic work!

  • @klassikats

    @klassikats

    Жыл бұрын

    Thanks! 👍

  • @craigheller9053
    @craigheller9053 Жыл бұрын

    Always learn something from your videos, thanks!

  • @klassikats

    @klassikats

    Жыл бұрын

    Glad to hear it! Kurt

  • @chuckglass8849
    @chuckglass8849 Жыл бұрын

    That's how I feel in the morning.

  • @klassikats

    @klassikats

    Жыл бұрын

    Yep, Know the feeling Kurt

  • @Dernie1000
    @Dernie1000 Жыл бұрын

    Thanks Kurt! Great Job!

  • @klassikats

    @klassikats

    Жыл бұрын

    Thanks Kurt

  • @thinkerdoit
    @thinkerdoit Жыл бұрын

    Another great one! Nice work. What was the diff between the battery you installed and the one that was there? CCA’s? Leak down - performed warm or cold b/c of the cold start issue?

  • @klassikats

    @klassikats

    Жыл бұрын

    The battery originally installed was not only the incorrect type for the vehicle it was also only a 500 CCA battery versus the 950 CCA battery specified by Porsche. Porsche does allow for a smaller 750 CCA battery although our environment and temperatures do not lend well to the size battery. Where ever possible I will always install the largest battery possible. Leak down pressures are always performed not matter what the complaint. It is best practice to gather as much information as possible when looking at a vehicle. Kurt

  • @thinkerdoit

    @thinkerdoit

    Жыл бұрын

    @@klassikats wish there were more battery options. Esp for the older bat box fitment, ie long hoods. anyhow great work and vid.

  • @robertbrandywine
    @robertbrandywine6 ай бұрын

    What is head retention? I've never encountered that term before.

  • @klassikats

    @klassikats

    6 ай бұрын

    911 cylinder heads need to be torqued at every major service. from 1965-83 models Kurt

  • @mahaney477
    @mahaney477 Жыл бұрын

    Had fun learning from this one as i have 76 as well. Cold start stability is my ongoing issue and it does not warmup gracefully. Am dealing with surging on warmup as you noted in the end of the video and I am pretty sure i have a small airbox leak as I diagnosed with smoke test, but am not ready to buy new airbox yet and was hoping to wait till winter. Surging goes away when warm, so am thinking the airbox heats up when running and seals better. So my question is? do i proceed with new airbox, or do i lean it out a bit. thanks!

  • @klassikats

    @klassikats

    Жыл бұрын

    Always fix the air leak first. Unmetered air can result in engine damage due to increased combustion chamber temperatures due to a lean fuel mixture. Then once the intake system is all sealed up you can adjust the fuel mixtures. Make sure you use a high quality gas analyzer and not an AFR meter. Kurt

  • @mahaney477

    @mahaney477

    Жыл бұрын

    Super, thanks so much for the guidance. You are the Best!

  • @caseylittle6417
    @caseylittle6417 Жыл бұрын

    @Klassik Automotive Training School Hey mate,, I’ve got an oddball question for you regarding the 3 barrel weber and zenith carbys. In your opinion,, what do you think the success rate would be running one of these type carbs on an 2.6 litre inline 6 cylinder? I have a 1962 vauxhall pa cresta with the 2651cc 2.6 litre 6 cylinder and I’m wanting to do some mild engine mods to it. No real performance parts exist for these things other than extractors/ exhaust headers so everything like cam, lifters, valve springs, pistons, head work will be purely off the cuff improvisation. Any advice would be great. Cheers ✌️

  • @klassikats

    @klassikats

    Жыл бұрын

    Of course, it could be done with a custom intake system. In my opinion, you would be better off running three DCOE side draft carburetors. Odds are there is an intake manifold already out there for that carburetor, and the linkage set is already available for those carburetors to run on an inline 6 configuration. Kurt

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