msp fuel cut???

[odie84]

I know there's a ton on this subject but all I can find is people discribing it as "hitting a wall" my car seems to be fine until under load. Once I hit above 5 lbs of boost it acts like a rev limiter.. is this the brick wall or mass air bad. I'm not sure would would be greatly appreciated.

 

[destineal]

 

[odie84]

see that cut out is not like what I am experiancing. mine seriously is like a rev limiter. alot faster hesitation then that.

 

[hornsfan10609]

How old are the plugs? It may be a coilpack going out or a plug wire.

 

[destineal]

Post a video. Fuel cut really is like hitting a brick wall. The car will buck

 

[odie84]

Would that not make for poor ideal if it was anything to do with firing?

 

[destineal]

maybe its not misfiring at idle

 

[hornsfan10609]

Frequently when coilpacks or wires fail the car will run fine at idle but will misfire under load.

 

[odie84]

Interesting... I am only experiancing it under heavy load.

 

[hornsfan10609]

Last year my car started hesitating in boost and it turned out to be the #2 cyl plug wire.

 

[odie84]

Hornsfan it was only in boost that you had issues? No where else through the rpm's?

 

[Atmosfear]

spark plug gap could also be too big

 

[odie84]

What would be a suggested gap for my plugs?

 

[hornsfan10609]

MSP plug gap is .028-.030", the plugs will come .044" for a N/A car and will need to be re-gapped.

 

[odie84]

Iv never had plugs and wires fix any issue in the past. Its amazing to me that it was just that. Thanks for the help

 

[03.5MSP_12]

Check your exhaust manifold gasket. I was experiencing this and had the CEL go off with a lean code. After searching and searching, this is what I came up with. At first there wasn't much noise, but as it got worse the noise got more prevalent. It was blown out on the top corner on the passenger side. I fixed it but still have the light which leads me to believe that the hairline crack on the manifold has something to do with it. No more "wall" under load though.