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#1
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Need help
I now have my starter fully tightened but my 77 lemans only seems like it's cranking very slowly. When I did the timing chain on her I made sure not to jump the timing. So the question I want to ask are is how's the best way to check if the carbs getting fuel/ or if the fuel lines are clogged. Cause I think that's my issue.
Last edited by Flashflood; 05-24-2020 at 12:38 AM. |
#2
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Easiest way to see if its a fuel problem is to either use a little starting fluid, or put a little raw fuel into the carb and try to fire up the car. If it fires, you know its a fuel delivery problem.
Pop the air cleaner off. What happens when you work the throttle by hand under the hood? Do you see any fuel go in? Does it smell fuel is present?
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. Mark S . Who needs nice and pretty, when you can have mean and nasty? KRE Aluminum headed 463CID 73 LeMans. Used to run 10.6x @ 124.55. 3700lbs . So much for 2020...shootin for 9s in 2021...and in 2022 apparently.....looks like 2023 as well. >>My 73 Build thread |
#3
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You could disconnect the fuel line somewhere after the pump and check while cranking (assuming mechanical)
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Chris D 69 GTO Liberty Blue/dark blue T400, 9" w 3.50s, 3905lbs 461, 850 Holley, T2, KRE 310s, Comp HR288 w 165s, RA manifolds, 11.60@114, 1.58/60 The spare: 467, 850 Holley, T2, Edelbrock Dport 310cfm w RA manifolds, HFT 245/251D .561/.594L, 11.59@ 114, 1.57/ 60' |
#4
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If it's cranking very slowly it has nothing to do with fuel. You either need a new starter/solenoid, maybe the battery needs charged or replaced, or maybe you have too much initial timing.
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#5
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You mentioned you just tightened your starter, did you add any shims? Many a Pontiac I have worked on has had a couple shims
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#6
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Or maybe the starter is fighting against the ignition timing being off after you did the timing chain. Could you describe how/what you you did when doing the timing chain replacement? Was the car running before you worked on it?
Murf Sent from my iPhone using Tapatalk Pro |
#7
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Also check your connections. Make sure clean, especially the ground connection.
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#8
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Quote:
Last edited by Flashflood; 05-25-2020 at 01:41 PM. |
#9
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Quote:
If the old chain had jumped time and you put the new chain on with gears in the same location... The cam would still be out of time. Looked and found this after reading your post about taking vacuum advance off to set ignition timing. Cam timing could be off causing this. Or distributor needs pulled and reset to get it right. You do not have to take vacuum advance off to set ignition timing if everything else is right. Clay |
#10
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