V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

Unknown starting problem

Old Apr 24, 2005 | 02:38 PM
  #1  
redRS's Avatar
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Joined: Dec 2004
Posts: 2
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From: Urbana, Illinois
Car: 91 Camao RS, 64 Beretta Z26, 98 Silverado Z71
Engine: 3.1-Camaro, 3100- Beretta, 5.7-Silverado
Transmission: 700R4, 4t60e, no crew
Unknown starting problem

OK the history first. We bought a running car. While working on the steering column. It would not start. Checked a lot of things, gets spark, just looks a little week. Fuel pressure was a little low, so replaced pump, fuel pressure great now. Pass key checked out just fine too. Knock sensor has also been replaced. Checked injector wiring harness, OK, Checked injectors, 23 to 24 ohms each. Thought it may have jumped a gear on timing, not that, though it needed a new chain. Replaced it. Distributor did not look the best, replaced it.

It has tried to start a few times, but is not consistantly. Has not even tried to start lately. Could the memcal or computer cause this sort of problem, its about the only thing that has not been replaced.
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Old Apr 24, 2005 | 02:48 PM
  #2  
85berlinetta2.8's Avatar
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Joined: Apr 2003
Posts: 1,248
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From: Ontario
Car: IROC Z
Engine: 5.7
Transmission: 700R4
what were you doing in the steering coloum?

vats maybe?
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Old Apr 24, 2005 | 02:59 PM
  #3  
dodger65's Avatar
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Joined: Apr 2005
Posts: 247
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From: Kouts,IN
Car: 88 Firebird, 86 T/A
Engine: 3.1/305 short block
Transmission: 700r4 w/ transgo, vette servo/700r4
if i'm not mistaken, 23 to 24 ohms is way high, even for pintle style injectors. pintles usually about 15.6, multecs usually about 12.6 (in my experience) make a 2 wire test harness and see if the fuel pressure drops when you trigger them individually...
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