Another no power problem...HELP NISTECH.

[youngmanvr4]

I've done about 10 hours of searching and asking so far but still cant figure it out. I bought a 90 shell 240 and put a DOHC in it. The engine for the last owner of the engine had lots of power. But for me I have none. I'm not sure but he might of taken out the spark plugs and put different plugs in for some reason. They might be gap wrong. But I dont know why he would do that. I'm going to buy new plugs and wires. And see if that does it. Then if it dosn't fix the problem then I'm going to get a new dist. cap and rotor. If that doesn't work I'll try cleaning the MAF. If that doesn't work what should I do?

The guy I bought the engine from gave me a different ECU then what he was using before becuase it had a PROM chip...we wanted to keep the EROM for his SR swap. So I'm pretty sure this is a different ECU then he was using. Do you think their is a chance that its a bad ECU?

The type stuff I'm having is alittle lower then it should be idle and sometimes rough. The power...well their isn't any. WOT and I can do the 1/4 mile and get up to 59 mph. Thats a 0-59 in like 25 seconds lol. It smells rich but I dont have a exhuast system on yet. Just OBX headers. So thats why it smells so rich. It also backfires when I down shift.

To elimate some of the problems the engine was working awesome for the last owner. So that elimates the problem of have bad rings and headgasket. And since it worked great and had lots of power for him the injectors should be doing ok. Under they can go wack in like 3 weeks. So that should norrow it down some.

The problem should be either something on the shell car or something that the last owner of the engine wasn't using, such as the ECU, spark plugs, it could be the vacuum lines I dont have hooked up right but I think everything is done right. Other then that I cant come up with anything. If anyone can help that would be awesome. Thanks, Nate

P.S. I've missed with distributor timimg. It didn't seem to help at all. And I'm a high compression engine (11:1 DOHC). Again the engine worked great just 3 weeks ago in another car.

[s13sr20chris]

pull codescheck timing with a timing light and tps unpluggedcheck fuel pressure and fuel hose routingcheck maf voltagedo a good tune-up with oem parts(cap,rotor,wires, ngk plugs)