Hey guys. I just installed a jrsc onto my friends del sol with a d16z6. After install it is running really really rich. It instantly fouls out the spark plugs. I upgraded the following during supercharger install.

Crower stage 1 cam (lashed correctly), adj. cam gear, extended the iat, purge solenoid, and tps, walbro 255, and a step colder plugs, insulated intake gasket, fuel pressure gauge (which is spot on). Supercharger was used and I never heard it run before.

I have 550cc injectors for it but I left the stock ones in so I can drive it and get tuned swapping the injectors when I get there. This car ran perfect before the supercharger and cam install. Does anyone have any ideas of what could be causing this. Fue

 

Actually I might be on to something. I got a used cam and I double checked the part numbers and it shows that its for a d16y8 engine. I've got a z6. I don't think these are compatible are they....?

 

Check crower website i'm quite sure they don't fit, maybe lift is too highv at inlet timing too long.. Did u replaced fpr with one adjustable? Maybe pump it's too powerful without correct fpr setup

 

Alright cool I think I'm going to switch back to stock and see what happens. Any other suggestions?

 

All you need to do is adjust the camgear by about 4.5 degrees. The difference bewteen the Y8 and the Z6 cam is about 1/2 a tooth on the cam timing. The easy way to know if you have it adjusted the right way is if you can get your ignition timing correct (close to the middle of the slots) with a timing gun (around 14 degrees). If you can't get it there, adjust the cam gear the other way 4.5 degrees.

 

Went through the cam gear stuff and got that correct and it still runs like crap. It can't even idle on it own. Misfiring and with black smoke out the back.

 

Any chance you have the purge solenoid and the IAT plugs mixed up?

 

FMU or ECU setup??

 

Ecu setup and I double checked all the electrical and it checked out fine.

 

Is the Walbro the 255 high pressure version or the regular? If it's the HP version, look here:

http://www.theoldone.com/articles/regulator/

Are you boosting at all yet (I hope not)?

 

sparks cables order inverted? if still smokes check airfuel ratio, did u did it?

 

Spark plugs are correct order and the fuel pressure is correct. I have a gauge attached. I have an aftermarket regulator that I put on just in case and it still did the same thing. Is there any way a bad supercharger could cause this? When I rev it up it doesn't sound like it should. Its not whiny at all.

 

Show us some pics of the install, close up. Any chance the bypass valve is not getting the correct vacuum reference?