I would agree that it's a fuel supply issue as well. I had the same problem, but not with biodiesel. (I don't yet have a setup to make any.) I'm not sure if you have a sock-type filter in the fuel tank, (I think all cars should have them!!) but you should check that and all the lines up to the filters and all the way to the injection pump. It can be a faulty pump, but with those symptoms I would think a restriction is more likely. If the supply pump was pulling a vacuum against a restriction it would cause exactly what you describe and then restart when the pressures had equalized in the fuel lines. All 6.2 engines that I've ever heard of were purely mechanical injection. It's easy to check. Look at the injection pump. It should have 3 wires going to it - one pink that's the fuel cut-off solenoid and two green that are the cold idle connections. If there's a bunch more wires (something like 8-12 I think) then it could be a computer, but that would be the first I heard of. I guess speaking of electrical it could even be that shut-off solenoid or a connection to it, but I doubt it. I've only seen them work consistently or fail completely. (Not that my experience is all that exhaustive.)
Good luck! Erik On 4/23/07, Zeke Yewdall <[EMAIL PROTECTED]> wrote:
Hmmm. I didn't think that computers were introduced till the second or third year of the 6.5 liter versions. All the 6.2's were mechanical injection. I've got a friend with a mechanical 6.5 that he runs on B100, and except for gelling issues in the winter, he says it has always run fine. Sounds like a fuel supply issue. Maybe the lift pump is weak and the injection pump is momentarily exhausting the supply of fuel in the filter. A clogged or gelled filter can also behave like this -- fine for the first 10 seconds of hard acceleration up a hill, then kaput, as the flowrate demanded by the injection pump exceeds the flowrate through the partially clogged filter. And if you let it set for little, the filter will re-fill, and it runs fine again. On my mitsubishi truck, I had to change the filter about 4 times over the first year when I switched to biodiesel. Around 1000 miles, 3000 miles, 6,000 miles, and 10,000 miles. On 4/23/07, Jan Warnqvist <[EMAIL PROTECTED]> wrote: > > Yes, he has. Once was enough. > > ----- Original Message ----- > *From:* John Beale <[EMAIL PROTECTED]> > *To:* biofuel@sustainablelists.org > *Sent:* Monday, April 23, 2007 3:15 PM > *Subject:* Re: [Biofuel] Chevy diesels > > Ask him if he's replaced his fuel filter since switching to Biodiesel. > > > > > On Apr 23, 2007, at 8:58 AM, Jan Warnqvist wrote: > > He has consumed approx. 600 ltrs and encountered problems from the very > beginning. > > ----- Original Message ----- > *From:* John Beale > *To:* biofuel@sustainablelists.org > *Sent:* Monday, April 23, 2007 2:36 PM > *Subject:* Re: [Biofuel] Chevy diesels > > But did he make the switch recently or has he been running biodiesel for > years and he's just now experiencing problems? > John > > > > On Apr 23, 2007, at 8:21 AM, Jan Warnqvist wrote: > > He is running on 100% BD and the problems began immedeately on the first > tank of BD. > > ----- Original Message ----- > *From:* John Beale > *To:* biofuel@sustainablelists.org > *Sent:* Monday, April 23, 2007 1:55 PM > *Subject:* Re: [Biofuel] Chevy diesels > > How long ago did he switch to biodiesel and is he running on 100% BD or > a mix? > John > > > On Apr 23, 2007, at 7:09 AM, Jan Warnqvist wrote: > > Hello everybody in the New World and others. > I have an aquintance who is running his Chevy 6,2 litre truck on > biodiesel, and he experiences mysterious engine stops etc. The car will > start immedeatly again after a few seconds. He suspects it to be a computer > bug in the injection system.Anybody with similar problems ? > > AGERATEC AB > Jan Warnqvist_______________________________________________ > Biofuel mailing list > Biofuel@sustainablelists.org > > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Search the combined Biofuel and Biofuels-biz list archives (50,000 > messages): > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > _______________________________________________ > Biofuel mailing list > Biofuel@sustainablelists.org > > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Search the combined Biofuel and Biofuels-biz list archives (50,000 > messages): > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > _______________________________________________ > Biofuel mailing list > Biofuel@sustainablelists.org > > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Search the combined Biofuel and Biofuels-biz list archives (50,000 > messages): > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > _______________________________________________ > Biofuel mailing list > Biofuel@sustainablelists.org > > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Search the combined Biofuel and Biofuels-biz list archives (50,000 > messages): > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > _______________________________________________ > Biofuel mailing list > Biofuel@sustainablelists.org > > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Search the combined Biofuel and Biofuels-biz list archives (50,000 > messages): > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > ------------------------------ > > _______________________________________________ > Biofuel mailing list > Biofuel@sustainablelists.org > > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Search the combined Biofuel and Biofuels-biz list archives (50,000 > messages): > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > > _______________________________________________ > Biofuel mailing list > Biofuel@sustainablelists.org > > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Search the combined Biofuel and Biofuels-biz list archives (50,000 > messages): > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > > _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
_______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
