Failure Mode, of????? |
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Failure Mode, of????? |
J P Stein |
Jun 7 2003, 07:11 PM
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#1
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Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
Here's the deal.
It's 85 deg ambient. Oil temp 100c. Last of 10 AX runs. Wide guts in 2nd and.....backfire...black smoke, flames out the exhaust....cool. No spark. Sumthin in the ignition went poof. NO warning Whatcha think? MSD (it was hot to the touch) Pertronix (got a spare) Coil? Cap & rotor are OK. Magnetic Pertronix thingy on the dizzy is ok. I let the thing cool down for 3 hours, but no joy......permanent daid. |
mskala |
Jun 8 2003, 10:20 AM
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#2
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R Group: Members Posts: 1,925 Joined: 2-January 03 From: Massachusetts Member No.: 79 Region Association: None |
Old news, but here's the failure modes on my perm-untunes. First
one came with the car care of PO, but only a couple of years old. It got heat sensitive, but it didn't kill the car. If car (or unit) was hot, when you shut it off you wouldn't be able to start it until it cooled off sufficiently. Of course during the time it's doing it you check a bunch of other things and then it starts working again, so it looks like connectors or other problems until you figure it out. So I got a new one, seeing as I needed a reasonably quick solution and wasn't going to rebuild the bosch one immediately. The next summer (not many engine hours later) it does the same damn thing. I was lucky and found a $60 working Bosch unit in Pano (one of my few scores) and have been using that for a couple years no problem. I keep an intermittent perm-untune handy for a spare if the bosch dies. I will be getting the other bosch rebuild sometime when I have a job. |
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