DIE F.I.!!!!, Tired of fiddling with no results Options

[McMark]

My fuel injection will most likely come off my daily driver in the next few months. I hate to switch to carbs, but I'm so tired of fiddling with the FI and not getting any results.

Right now, my biggest problem is that my car won't idle when it's hot. It runs great when it's cold. But once it's reached operating temp it won't idle. I'm thinking that it's not firing on all cylinders once it gets warm. Today I had a lot of errands to run and so at first it was the usual heel-toe at a stop light to keep the rpms up. By the time I was heading home I had to rev to 3000 rpms to get going at all.

It's just ridiculous to have all these 30 year old FI parts, none of which cam be trusted to be working correctly. I have brand new TPS, Head Sensor (NAPA brand), and my MPS was tested and okayed by Jeff B. I checked my Trigger Points on the oscilloscope and they're firing as normal. I adjusted my valves this morning and they were good enough before I changed anything, and now they're even closer.

If I could fix the FI without spending $1000 on parts I would do it, but I don't think that's realistic. Grrrr, I'm just fed up

[Bleyseng]

Jim, if the air bleed does nothing to adjust the idle somewhere you have a vacuum leak or the timing is off. My guess is a combination of vacuum leak, too rich a mix, and the valves need adjusting. Is the MPS is factory sealed?? Does it hold a 15hg vacuum for 5 minutes?

OK, Djet on 914's. Why do people have soo many problems.
1. These cars are 30 years old and have usually had a mechanic along the line "plug and play" with the FI parts so they are not MATCHED. The matching of the parts is important, check Brad Anders site for the proper set of parts for your car.
2. Usually as a engine ages it doesn't have as good a vacuum signature for the MPS, there is not adjustment for this other than to adjust the MPS which most have been. They usually are not even close!
3. Usually they vacuum hoses are old and leaking.
So the bottom line is:
A Djet FI system with mis-matched parts, old vacuum hoses or a high mileage moter is going to have problems! duh! How well will a carb motor run with only 90lbs of compression?
People who have driven my 2056 914 will attest to how well it can run. With 95hp to the rear wheels (about 115hp engine) the car really pulls. But yeah, there is more power buried in it but it is limited by the FI cam. I removed the dual carbs I had on the car and re-installed the Djet. It took me quiet awhile to figure it all out because there wasn't a site like Brad Anders before. After talking to Brad Anders I have learned to tune the Djet using a dyno and testing equipement to really get the most out of the FI.
Chris Reale's car is finally running sweet after finally sourcing good and correct parts plus hooking up the dis-connected injector.


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Geoff