New combo running rich

[mustangjoe87]

Hey guys haven't posted in quite some time. I tossed cam and intake on my 87 recently and I thought that I was hearing a miss while it was idling the garage. Figured it was time for a tune up since its been a few years. when I pulled out my old plugs I noticed they are pretty loaded up, well it seems that with my new combo she is running very rich. Here is what I am running, typhoon intake, TFS-1 cam, 75mm Tbody (I know its big, but it was laying around) and the stock heads and injectors. If anything I was figuring that this combo would run on the lean side with all the extra air and no change in fuel pressure. Any suggestions on where to start tunning?

 

[SpartaPerformance]

Recheck your timing.

 

[mustangjoe87]

It was at 15 degrees when I set it

 

[SpartaPerformance]

Here is a dumb question did you check for blockage between MAF meter and intake? I've seen all kinds of stuff like forgotten rags etc.....

 

[mustangjoe87]

87, speed density

 

[SpartaPerformance]

Your signature says mass air swap, if you're still running speed density and you have a performance cam that is your propblem

 

[1987stangman]

Your signature says mass air swap, if you're still running speed density and you have a performance cam that is your propblem

I think it said was in a "pile". But +1 on the the SD. I can tell you from personal experiance with that cam that it will run WAY rich and the issues dont stop there. Since you have the swap parts now is a good time. You will see what I mean when you swap it.

 

[jka]

Install an adjustable fuel pressure regulator and a fuel pressure gauge and see how it do when you adjust the fuel pressure. If that does not help any you may have to convert to mass air.

 

[Pratice]

No way will you get that car to idle good and have decent drivability with that cam in a SD car. The problem your having is too low vacuum with a cam that has less than 114 LSA.

 

[jka]

If you convert to mass air and turn the idle up to 900 rpm it should idle okay.

 

[SpartaPerformance]

I think it said was in a "pile". But +1 on the the SD. I can tell you from personal experiance with that cam that it will run WAY rich and the issues dont stop there. Since you have the swap parts now is a good time. You will see what I mean when you swap it.

Do the swap