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Dayleh
New User
Jul 16, 2006, 12:36 PM
Post #1 of 7
(2641 views)
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'86 Pontiac 6000 LE
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have a '86 pontiac 6000 LE with 2.8L and 2 barrel carb. The past few days the car has been hard to start, but would finally fire. I pulled the distributer cap off one day and found quite a bit of corrosion on the rotor and the metal tabs in the distributer cap. I replaced the distributer cap and rotor. The car started easier for a couple of days. Now it will not start at all. I pulled a couple of the spark plugs which were completly black with carbon. Bought new plugs and wires but still won't start. Pulled the fuel line loose from the carb. and their was no fuel there, but when I turned it over fuel sprayed out of the line. Since I had this line off I went ahead and changed the fuel filter. I tried spraying a little starting fluid in he carb. but still wouldn't start. I noticed that after spraying the starting fluid that it had coughed and sprayed out of the carb and even had a flame shoot out once. Any help would be great.
Thanks Dayle
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jul 16, 2006, 1:40 PM
Post #2 of 7
(2636 views)
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Re: '86 Pontiac 6000 LE
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That carb uses choke pull offs (think two) and they fail routinely and will over choke the car. Retract them and put your finger over the spud for vacuum and they should hold. If not -- especially the primary one will cause lots of problems as you described. Some to leak down slowly and that might me normal. Primary should work immediately and secondary when the engine warms up a bit. Proper adjustment is tricky and if you find them bad don't trust them out of the box. Drill bits can be used on a cold engine with a vacuum source to check them but holly cow do NOT drop a drill bit into the carb!!!!!!!!! T
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Dayleh
New User
Jul 17, 2006, 10:02 AM
Post #3 of 7
(2631 views)
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Re: '86 Pontiac 6000 LE
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I have tried both of these and they both stay when a vacume is present. I have also tried a different ignition coil, but this din't not help.
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Dayleh
New User
Jul 19, 2006, 12:07 PM
Post #4 of 7
(2621 views)
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Re: '86 Pontiac 6000 LE
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I have also tried a new ignition control module, again with no change.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jul 19, 2006, 6:47 PM
Post #5 of 7
(2619 views)
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Re: '86 Pontiac 6000 LE
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Arggh! How many miles on this car?
T
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Dayleh
New User
Jul 20, 2006, 9:53 AM
Post #6 of 7
(2617 views)
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Re: '86 Pontiac 6000 LE
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There is 103000 on it. I have found that the timing is off on the car, either the timing chain has sliped or is broken. Thanks for all your help.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jul 20, 2006, 11:33 AM
Post #7 of 7
(2616 views)
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Re: '86 Pontiac 6000 LE
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I was worried about the timing chain I have seen them go many more miles and it's tricky to diagnose without seeing it. Most origs use a nylon gear and the replacement won't. Engines with real chains will still run if off a tooth or two but that's about it.
Trying to think of some tests with a cold engine for this................
* Can't recall what cranking vacuum should be but it may be normal at about 14 Hg and would be 18ish running and warm but we can't do that.
* A compression test that shows all way too low would be a clue also but that also should be done with a warm engine. I would try the squirt of oil and if it's jumped that won't help it.
* Some you can feel thru the fuel pump if removed and turn damper to you are touching the slack -- Not sure if you can on the 2.8
Hate to see you get into all of this and that not be it. ANY MORE IDEAS ANYONE?
The timing being off is a clue. If you set it right it may run but you would always set it back to where you started and can be done with just a cranking engine. Not perfect and recheck with it running to spec when problem is solved.
Most orig chains go more miles but not all! Any history of overheating or if it's already been done?
Good luck, I'll think of what else for diagnosis and post it. Dang -- only one in a career caused a car not to run and all the rest were highly sympomatic or I just replaced them when a car had some miles if it needed a water pump as you are part way there, T
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