2G HELP! car idles but wont rev above 3k rpm

[edmaxx]

i recently rebuilt a 4g63t, had to use a CAS sensor to get it to run, had it running great for about 10 min, then i noticed there was a 100a alternator/ choke fuse spot. i threw one in and the engine made some crazy noises and stalled. now it idles poorly and will not rev above 2500-3000 rpms without bogging out and blowing out alot of smoke. i checked my timing and noticed it slipped 7 cogs on the crank but not the cams. i reset it, and the exhaust cam kept trying to move on me and i couldnt get it timed right for the longest time. this is running me up the wall, please help. car runs but will not rev up.

 

[edmaxx]

well i can do the 1g way now because a cam angle sensor, but how do you know if you have your timing belt right? is there a special tool?

 

[motozachl]

Boost leak test your car already

Info on timing belt: Timing Belt VFAQ

 

[edmaxx]

haha alright alright, ill go do that right now

alright so its reving up now but...

its making the worst noise i have ever heard from the engine, it sounds like its coming from the crank. it was running great for about 10 min. i tightned my spark plugs to see if my some off chance it would help, nothing, so i losened them back up to see if that was the noise. then i turn it back on, it goes up and down in rpms 1000 to 1500-2000 the back to 1000.

HELP

 

[glennd789]

pull you ecu and pull it out of the case take the borad off the backing plate and look at both sides of the board verry carfully look for burn marks discoloration or bunt components make sure you ground youself befor you take it apart thogh static electricity is your worst enemy will doing this

i had the same problem mine ended up being a burnt out coper inlay it took a .01 cent pice of wire and five minuts to fix hope it helps and good luck