Electrical Ghost doesn't like to let me start... - JeepForum.com
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Unread 04-04-2010, 08:06 PM   #1
syn
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1986 CJ7 
 
Join Date: Aug 2009
Location: US
Posts: 47
Electrical Ghost doesn't like to let me start...

So I long story short, I have starting troubles.

When I go to start up my 258 after its been sitting for a night there is extremely excessive cranking before I can get the engine to fire. Before I turn the key I usually sit on the gas pedal for a bit. That generally (not always) ensures that after 10-15 seconds of a cranking she will start. But that is not always the case.

When I stop cranking one of three things happen
1) Absolutely nothing
2) I get a hissing noise, she sounds like she's trying to start but cant and dies out or tries to keep sputtering until i turn the key to the off position
3) She starts shakily until i floor the gas and then she levels off and runs awesome until the next time that I have to turn her off.

When she fails to start some weird stuff happens when I go to try again. Generally if i try to key it straight into crank again there is some nasty grinding noise that I think it coming from the starter motor but I'm really not sure.
But If i key her into "on" i usually get a hissing noise and a small attempt at a start just like on a failed crank. I think this is odd (obviously) since im not keying it to crank.

I am really at a lost as to where this is coming from. I have seen plenty of CJ's that kick right over when you go to start them and would really like to get mine to that point. For a while I was thinking that the problem may lie in the carb, but now I feel like there has to be something in the wiring or ignition somewhere.

I have replaced the ICM (because the last one died over the winter) so I figure it's not that. Could it be the ECM, carb maybe? I have no idea at this point

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Unread 04-04-2010, 11:43 PM   #2
Cutlass327
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1978 CJ5 
 
Join Date: Jan 2009
Location: Massillon, Ohio
Posts: 5,099
Can you locate the point of the hissing? I'm thinking either a vacuum leak or if you stop it on a compression stroke you are hearing the compression bleed off. It could even be a partially burnt air/fuel mix bleeding down.

Do a compression check on it, and then verify that carb is getting plenty of fuel. A little fuel in the carb make it run easily? Has it been sitting for a long time? Maybe needs the carb redone.
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1978 CJ5 258/T177/D300, '86 D30/D44 WT axles, 'glass tub windshield frame, and fenders, 31x10.5 BFG A/T, TDK galv'd frame - DD and weekend toy

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Unread 04-05-2010, 12:47 AM   #3
thantos858
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1974 CJ5 
 
Join Date: Jan 2005
Location: Santa Maria
Posts: 1,516
I would fix the starter problem first before looking for other problems my guess is that is the biggest problem going right now. Take it off and go to a auto parts store and have them test it. While you have it off look at the teeth on the starter gear and the ring gear for broken or missing teeth.
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Unread 04-06-2010, 07:48 AM   #4
syn
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1986 CJ7 
 
Join Date: Aug 2009
Location: US
Posts: 47
Well to be honest I'm not sure how long its been sitting around, I know it hasn't had any serious use in a good many years, but the carb has been rebuilt once. I just have no idea when... I haven't done a compression test since the summer but over then it took maybe two or three cranks to get to either 115 or 130 if i recall correctly? Which I may be wrong about, but all the cylinders got up to pretty much the same pressure at the same rate.

Whats the best way to check for a vaccum leak? I wouldn't be surprised if I had one or some of the hoses hooked up wrong.

I'll definitely check out the starter motor although she cranks strong especially after shes been running for a few minutes. Do you know if its a totally sealed unit? Because I have a leak out of my rear main seal and thats gotten plenty of oil on the starter. Although I've had this issue long before the leak was present
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