Question about 1992 Dodge Colt
Runs rough when cold, gets a bit better when warm. Stalls sometimes at red lights even after driving for a bit. Sometimes doesn't have any "pick-up" when I give it gas when the light turns green.
Garage tested compression, which was fine. Ignition wires and plugs tested fine. Replaced fuel injector and didn't solve the problem.
The garage told me they think it might be a loose valve seat. This is big$$$
Does this sound right? Should we scrap the car?
It sounds like the diagnosis was thorough, thanks for the detail.
> Tried new spark plugs
While dealing with a 2-year old original set of dying ignition leads on a '95 Saturn we bought new and qualifies as the worst car we ever owned, I also replaced all of the plugs with my preferred brand, Bosch platinum, and was rewarded with a more severe miss on one cylinder. Pulling all plugs again, I found one of them had lost its thin platinum wire (it slipped in the insulator) which ended up sitting on the ground contact. If, in your case, the miss was in #4 before and after all the tests and changes were done and the miss was still in #4, I doubt if that is the problem.
As far as the economics of spending that money on a car 16-17 years old - that's a tough call and would depend (for me) on the overall condition of the in- and outside, the fuel economy the car can deliver and finally, the total mileage. If the car was in fair condition (no structural rust or disintegrating interior), mileage under 150K, I'd probably go for it since replacing it with a used vehicle would leave you with possibly unknown problems and buying new is a decision that only you can make and very dependent on what you can best afford, how secure your employment, and all those other nagging factors. Until my age and physical condition became factors, I did my own repairs after having really bad experience with 'professionals.' This isn't for everyone and requires some mechanical skills, a few specialized tools, a good service manual (I like Haynes), either being self-employed or having two weeks of vacation available (to do it with care) and a modicum of patience. I had those things, and enjoyed the satisfaction of knowing that everything had been done as it should and had only one occasion to redo anything, caused by having been given the wrong gasket set.
Posted on Mar 05, 2009
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Posted on Jan 02, 2017
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