got a ls/vtec boosted, stock t-belt, got it tuned she ran like an animal couldnt of been any better, couple weeks later starts running like crap a/f way off at idle and crusing, when igo in boost they hit 10 flat way rich when im crusing way lean and breaks up, tried revisions on the the tune didnt change, i checked everything, my question is does anyone think the stock belt could of skipped a tooth cuz thats my only other thought that it could be

 

did you actually check timing?

could be alot of things, all vac lines on still?

 

all vac lines are good, and yes i checked ign. timing and it was a lil off but it looks to be about a tooth offs that why im thinking i need to check to see if the oil pump mark is lined up right, im jusr out of ideas ive been chasing this problem for a couple months now

 

if the timing is off, fix then come back if you still got problems

 

Did that, keeps goin off time

 

Lemme correct that reset ign time and never stays on but not where the oil pump is yet

 

check the cam timing not ignition timing,, that will tell if its off by a tooth line up the mark on the crank pully with the mark on timing cover and see if the cams are lined up

 

update, i lined the marks on on the crank and the cam lines are half a tooth off, and the cars still running very lean at idle and driving