Engine Performance problem
1990 Toyota Corolla 4 cyl Front Wheel Drive Manual 80,000 miles
My engine seems to misfire or knock when driven aggressively. I'm not sure but it feels like it hesitates for like half-a-second when I really floor the gas very fast. It drives perfectly when driven nicely and I can feel the pull really well, the engine had a new timing belt, new oil, new gear oil, timing was set, the distributor was cleaned and new oil seals and everything. I even changed the distributor pickup coil. Is that it? Is it the new pickup coil? And the funny thing is, I marked the previous timing of the distributor before I took it out now when I put it back, I had to advance the timing so far away from the previous mark which was I think was the best timing I had. I took the distributor out, checked it again and put it back, and still my car seems like misfires when driven aggressively. Everything's okay except that. When I drive moderately, all is okay. My friend told me to check the vacuum advance and maybe somewhere in the exhaust there's a leak.
Any ideas? Please.
Thanks a lot and more power!
Tuesday, July 14th, 2009 AT 11:19 PM