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Old 09-12-2017, 11:10 PM
skrufy skrufy is offline
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Join Date: Nov 2004
Posts: 53
Hi Gearheads-

Haven't posted for a long time as my '95 D1 runs like a top. Owned since new, have had my fair share is issues familiar to many here. 165k miles. Amsoil everywhere. Have over the years replaced battery, fuel pump, temp sensors, MAF sensor, plug wires, et al, as well as the usual tune up stuff.... have the factory shop/electrics manuals, parts manuals on microfische ( you youngsters google it - that's the way it was done in ancient times, before the iPad...) have always worked on my own vehicles, am pretty confidant with a wrench, but not a professional- could be though.....

So- no codes, no lights- Check engine. etc, battery fairly new, good connections, good spark, good fuel pressure at the rail, good residual fuel pressure per manual, recent plug wires/plugs- all fuses good- interior/engine bay. Live in the mountains of Arizona, so no real rust/corrosion problems anywhere....

Ran thru 9 pages/425 postings in this forum under the search 'engine quits' - so if I missed the obvious solution in someones post, sorry I missed it. hate wasting everyones time, but am a little stumped and seek the wisdom of the Forum and those a lot smarter than me.

Over the last few days, the D1 started to stumble- intermittant surging if you will on the engine- then dies. You let it cool for sometimes as little as 5 minutes, then it cranks/runs per normal- then may run for an hour- then dies again. Have done static runs in the driveway in the morning- cranks/ runs, then dies after 4-5 minutes.

I initially though it was fuel pressure- then got out my fuel injection tester- don't believe fuel is an issue here. i do have a new fuel filter i have not installed yet. Runs at 35-40psi, 30 psi residual after shutdown/quits. I don't have my best pressure gage on the rail- so the actual numbers may be a bit better- or worse.... On start w/o ignition, the fuel pump kicks right to 30 psi.....

I do have a Mallory distributor on the D1- immediately suspected the optical pickup module (Mallory 6100M or Accel 2005)- tested the coil voltages and module- all appears to be ok w/in Mallory specs. Have a Mallory surge filter in line to protect the module- by passed that, problems still exist, so the filter appears to be a-ok. Have a new pick-up module on order- maybe get it tomorrow....

So, ideas on what is telling the ignition to quit or other ideas here I am missing. Any inputs will be greatly appreciated. Hopefully something simple, and obvious.... Otherwise the D1 has been great- and nothing out there rides better in the forest.

Thank you-

Tim
Alpine, Az.
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