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Posted by: ynotdd Sep 16 2004, 06:36 AM

Pulled my plugs the other day and it looks like the motor is running to lean( very white) I have a 73 2.0 with stock FI . k&N air filter and a kerry hunter exhust with a super trap with all discs in.
It has crane optical ignition and the motor has about 2500 miles on it. Is this normal for this motor ? if not what can I do ? it runs great! I use it for autocross and DE only. Please Help

Posted by: Bleyseng Sep 16 2004, 07:11 AM

Put it on a dyno to check the A/F with a load on it before doing anything.
Check the fuel filter too and what part number are on the MPS and ECU?

Geoff

Posted by: ynotdd Sep 16 2004, 11:41 AM

MPS and ECU are correct. could fuel pressure cause it? its running about 34 pounds?

Posted by: ynotdd Sep 17 2004, 06:26 AM

please help

Posted by: Joe Sharp Old Sep 17 2004, 10:38 AM

I've got that problem also, I put colder plugs in just to see if it made any differance. It did but not enough. Going to have the MPS tuned by HPH. They want to do a few at once. So give them a call, I,m going to try to set up a time for my car. Your fuel pressure is a little high and that should help. Go to a colder pulg, if you can't get the pulgs to run a rich dark tan don't run it.
Joe

Posted by: Joe Sharp Old Sep 17 2004, 11:23 AM

Got a date for my tune-up, Nov. 4th.It sounds sooo far away, but with all the work I have in my motor I'm not taking chances. This car should be my A/X car.
Joe

Posted by: ynotdd Sep 17 2004, 12:54 PM

someone told me that if i take some plates/Discs out of my super trap that will help.does that sound right?

Posted by: Joe Ricard Sep 17 2004, 07:06 PM

Yes it will Don't know how much but it should also up the low end torque.

Posted by: TimT Sep 17 2004, 07:15 PM

the more discs you have in the supertrap, the more it will scavenge.. ie the exhaust will flow more freely /evacuate the cylinders, possibly even pull some of the intake charge out before the valves close.

If you remove a few discs you will have a quieter car, and more back pressure in your exhaust system

Unfortunately unleaded fuel really doesnt allow accurate spark plug cuts..

I have a wide band O2 sensor, if you want I could drop by one day and see what we get

BTW Rich still hasnt let me know prices for the 914s yet

Posted by: ynotdd Sep 20 2004, 08:16 AM

Tim I would like to take you up on your offer (o2 sensor) I think I am going to try taking out some discs, to see if i feel a difference.