when I give gas hard it stutters and pops and under load like in gear same thing . just started the day I let my wife drive it ( my mistake there


I have changed fuel filter and and bad injector , some improvement but think it was just fuel ( high resistance reading ) injector that was going out and that improved smoothness of engine .

Cleaned egr ports 3-4 were completely clogged fourth was nearly gone as well .

plugs , wires 6 months old , new alternator , checked for plugged cat just removed it temporarily .. nothing is working .

had oil leaks to begin with through vtevh pressure switch , fixed that and cleared the 22 cel but not the problem . changed valve cover gasket as well and spark plug tubes had no oil leaks in them .

 

oh car has 270k in it engine was replaced at 200k or so . Its an EX and we just returned from 3k mile trip ran perfectly other than beginning to leak oil but I think that was just from running 85 through mountains in lower pressure just was more than old seals could take .

 

Sounds like you need a valve adjustment. If not new valves completely.

 

sounds like you should check the mechanical timing

 

checked valve lash while I had cover off first 8 or so were perfect one was just slightly loose . don't think its valves.
as it does run beautifully once you get past the hiccup.
mechanical timing? if every thing is at tdc when it is supposed to be at tdc isthat not correct?

 

ok can you make a clear video ?

i honestly don't really even have an idea at this point based on your information

 

yea I will try tomorrow based on putting everything back together

 

That definitely sounds like a timing issue.

 

I thought on interference engines if timing is off running would cause damage ? I mean I can slowly accelerate all to red line with out so much as a sputter , smooth as silk .
even at hard accel after a second or so it catches up ad is smooth as silk . shouldn't there be a tic or misfire through the range some where if it was out of time .

I have had it to 80 on interstate since it started testing it out .. seems I would have bent valves all over , per my understanding ? Timing belt lo0ks good and best I can tell all marks are in line . have non on bottom not sure if they just wore off in 270k miles or if it is new pulley when engine was changed .

 

you know what...check and see if your tps and map sensor connectors are accidentally swapped...also check the iacv and iat connectors

 

No I knew better than to switch connectors ...

and I figured out the problem TPS had been broke since I purchased the new one , it was in three pieces guess it was just burned out at the range is was stuck in . Or it was the FItv valve I cleaned it while I had Throttle body off to change TPS but it is 95% now got a littel hitch now when motor is cold and throws a 12 on cel on occasion .