I need help, i just dont know.....

[tmaxx31190]

alright, my problem is, when i am at cruising speed and lay into the throttle the engine (for lack of words) sputters. i don't really know how to describe how it acts, bit people that have rode with me say it sounds like it's floating the valves. it gets worse when i turn the manual boost controller up to around 9psi. does anyone have any ideas what this is, or can anyone confirm the floating valves?

 

[S.A. supra]

alright, my problem is, when i am at cruising speed and lay into the throttle the engine (for lack of words) sputters. i don't really know how to describe how it acts, bit people that have rode with me say it sounds like it's floating the valves. it gets worse when i turn the manual boost controller up to around 9psi. does anyone have any ideas what this is, or can anyone confirm the floating valves?

Sounds like a ignition problem, coil packs? Maybe when you floor it It's not able to keep up with fuel. My coils on my 1jz would stumble really bad when I floored it. I would start at the plugs and work your way backwards. Plugs, wires, coils, igniter.

 

[tmaxx31190]

Sounds like a ignition problem, coil packs? Maybe when you floor it It's not able to keep up with fuel. My coils on my 1jz would stumble really bad when I floored it. I would start at the plugs and work your way backwards. Plugs, wires, coils, igniter.

ok, cool, thanks i'll try that, the coil packs may be original for all i know

 

[Who]

Pull codes plz

 

[tmaxx31190]

Pull codes plz

ok, I'll see if i have any

 

[7mLove]

they only way you would be floating valves is if your springs were shot. how many miles on the motor. and ive only ever seen valve float when a motor was turning like 10k rpms when it should have been doin like 7.5 lol. your springs should be able to keep up especially if your just on the highway sounds to me like fouled plugs almost cause if your packs are good then your plugs are getting cleared then firing correctly

 

[tmaxx31190]

they only way you would be floating valves is if your springs were shot. how many miles on the motor. and ive only ever seen valve float when a motor was turning like 10k rpms when it should have been doin like 7.5 lol. your springs should be able to keep up especially if your just on the highway sounds to me like fouled plugs almost cause if your packs are good then your plugs are getting cleared then firing correctly

it's got 80,000 miles on it. floating the valves is just the only way i know to try and describe it, lol. i'm gonna try some new plugs and go from there

 

[Poodles]

What RPM?

 

[tmaxx31190]

What RPM?

usually lower but sometimes higher

 

[suprarich]

Get some copper plugs and gap them to .028 to .032 and watch the sputter go away.

 

[tmaxx31190]

Get some copper plugs and gap them to .028 to .032 and watch the sputter go away.

cool, i actually just bought some NGK Platinum plugs today.

 

[91supran/a]

not to thread jack but my car does kinda the same thing but its more like my car has plenty of power then it hits the next gear (auto) it kinda bogs down and kinda chug chug chug and pulls real soft at full stock boost. any ideas? i just put a brand new tps calibrated following the book and just rewired the knock sensors. it also kinda wants to stall if you hit the gas hard in it and the check engine light comes on throwing the ignition code i think im gonna recheck tonight. i was thinking plugs and wires since idk if there originals or not. any other ideas?

 

[Poodles]

Ok, really, what RPM? If the RPM is low and you're bogging the engine it's not anything wrong, it's you not downshifting. If it's happening aorund torque peak it's probably spark blowout..