Question about 1986 Toyota Tercel
Has lost power. Starts great, runs well. Just doesn't have the former power. On the highway it will run fine for awhile in fifth gear, then will slow down until I shift down to fourth and bring it back up to speed. Then I can shift into fifth and it will run well for awhile before losing power again. Also has less power than before climbing hills. My mechanic has tried lots of things but can't find the problem. My wife loves the car just as it is, but I'd be happier if the problem could be fixed.
Tere may be no solution to this problem because the car has 200,000 miles on it however I can explain somewhat, when engines heat up occasionally we find break downs in efficiencies regarding to moving parts, (loosening up then binding ) this may however not be the problem it may be as simple as fuel pump fatigue after running a while and it can't deliver the appropriate fuel pressure. I would say perform commpression test to assess engine efficiency then evaluate ignition ensuring bright blue or purple spark coming from exposed sparkplug then ensure proper fuel pressure/delivery and check vaccuum pressure to ensure a steady reading of 18-20 pounds of vacuum ... got it if low vacuum replace all vacuum hose to eliminate porous condition of hose therbye leaking small amounts adding up to a larger total accumulative sum. causing poor performance. good luck
Posted on Jun 24, 2009
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Posted on Jan 02, 2017
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