drive it gently when its cold!
Hmm... the 217,000 should be a good indicator. Its not a race car, and it has some miles on it so be patient.modestobulldog said:My 99 has 217,000 miles, and new spark plugs (denso). When it is cold, there is a hesitation when I accelerate hard. It feels like I lose power for a split second. It only happens within the first few minutes of start-up. Air filter has approx 2,000 miles. I have never replaced the PCV valve.
cheesep said:Modestobulldog. I apologise for jumping to conclusions about the situation. The additional information really helps.
Actually I think the cold engine is only accentuating something else that may be wrong. Here's an experience I've had.
When I first got my '98 rolla (used) it would hesitate on moderately hard acceleration and much worse if I really stomped it. It was worse when it was cold but still definitely there when it was at full operating temp. I actually thought it was the auto tranny at first. but then I read a post about diligently replacing the spark plugs as these engines are very sensitive to that.
Sure enough I looked at the plugs and found the previous owner had installed Bosch Platinums which were not recommended by others. I went to the dealership and picked up their recommended normal cheap (Denso I think) plugs, put them in, and the problem disappeared completely. After putting about another 80,000km on the car I noticed similar symptoms and some minor rough idle/missing. I replaced the plugs again and also this time the wires. The car has 190,000km on it now and runs great. The plugs and wires fixed everything right up. This was my experience. It may be something you could look at if you haven't already.