CAR BARELY STARTS
#1920104
09/26/15 03:59 PM
09/26/15 03:59 PM
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Joined: Feb 2003
Posts: 2,138
tucson az
frank
OP
top fuel
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OP
top fuel
Joined: Feb 2003
Posts: 2,138
tucson az
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68 Charger with mostly stock 383. Been trying to get the car running since removing from storage of 5 years. To date: changed oil, removed fuel tank, drained, cleaned and blew out all lines, new fuel filter (second) rebuilt 670 SA, new plugs, timing is correct, spark is present, fuel is present to carb and can be seen squirting out when linkage is moved. I did a compression check and compression is at all cylinders. The car wants to start and will start but only if I crank for about 10 seconds and with accelerator pedal to the floor only then will the car start and run poorly. Max rpm is 800 and running very rich. As soon as I let up on gas pedal car dies immediately. Would weak spark cause this? At the inboard side (blue and brown wire) of ballast resistor there is 10.5 volts. Car ran perfect before going into storage.
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Re: CAR BARELY STARTS
[Re: frank]
#1920129
09/26/15 05:08 PM
09/26/15 05:08 PM
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Joined: Feb 2003
Posts: 8,671
Andrewh
master
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master
Joined: Feb 2003
Posts: 8,671
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manual choke or automatic?
did you rebuild or someone else on the carb?
I can't tell what kind, but if it is the holley type, my first time I rebuilt one, I used the wrong gasket set. it wouldn't idle.
could be the gasket under it, could be a hose you can't see the crack in.
So lets do a little diagnostic.
if you have a helper, hold the choke closed, see if it will start with your foot on the floor.
next, try pumping the gas say 5 times first, if it is warm. see if it will catch and then die when it runs out of fuel.
you can try it with 10 pumps as well. leaving the choke open.
if it starts and runs like that, I might agree, a vacuum leak somewhere to start looking for.
if it doesn't, then I would check the carb again to see if it was rebuilt correctly.
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Re: CAR BARELY STARTS
[Re: frank]
#1920131
09/26/15 05:10 PM
09/26/15 05:10 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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I'm thinking valley pan but you HAVE rebuilt the carb since pulling it out of storage & it is correct (no internal vac leaks from a misplaced/wrong gasket)? dist (timing) unchanged & fresh gas/plugs
live every 24 hour block of time like it's your last day on earth
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Re: CAR BARELY STARTS
[Re: RapidRobert]
#1920151
09/26/15 06:01 PM
09/26/15 06:01 PM
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Joined: Feb 2003
Posts: 2,138
tucson az
frank
OP
top fuel
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OP
top fuel
Joined: Feb 2003
Posts: 2,138
tucson az
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I'm thinking valley pan but you HAVE rebuilt the carb since pulling it out of storage & it is correct (no internal vac leaks from a misplaced/wrong gasket)? dist (timing) unchanged & fresh gas/plugs I'm assuming its correct but maybe not. Fresh gas and plugs. Timing is unchanged from when the car went in storage and I checked movement of rotor. At TDC on compression its where it should be
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Re: CAR BARELY STARTS
[Re: Andrewh]
#1920188
09/26/15 07:04 PM
09/26/15 07:04 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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if the compression numbers are in the norm (~130-150 ish) then that says that the long block is OK (no blown head gasket or slipped tchain). dist housing was unmoved. its getting multiple sparks at the plug wire plug ends when cranking correct?. new gas. I keep coming back to vac leak. I would do What Andrewh said (1) do some vac leak diagnostic checks & (2) then borrow another carb. EDIT but the having to floor it goes against the vac leak idea. When it starts can you look in the carb (carefully) & see if it is dripping. Keep us posted!
Last edited by RapidRobert; 09/26/15 07:15 PM.
live every 24 hour block of time like it's your last day on earth
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Re: CAR BARELY STARTS
[Re: frank]
#1920204
09/26/15 07:31 PM
09/26/15 07:31 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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68 Charger with mostly stock 383. Been trying to get the car running since removing from storage of 5 years. To date: changed oil, removed fuel tank, drained, cleaned and blew out all lines, new fuel filter (second) rebuilt 670 SA, new plugs, timing is correct, spark is present, fuel is present to carb and can be seen squirting out when linkage is moved. I did a compression check and compression is at all cylinders. The car wants to start and will start but only if I crank for about 10 seconds and with accelerator pedal to the floor only then will the car start and run poorly. Max rpm is 800 and running very rich. As soon as I let up on gas pedal car dies immediately. Would weak spark cause this? At the inboard side (blue and brown wire) of ballast resistor there is 10.5 volts. Car ran perfect before going into storage. I know you said new plugs, but have you looked at them again, since this problem started? Got any pictures of them? That's the first thing I would check beside the normal stuff that you have already. It don't take long or isn't hard to foul out new plugs if things ain't right. 
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Re: CAR BARELY STARTS
[Re: frank]
#1920238
09/26/15 08:24 PM
09/26/15 08:24 PM
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Joined: Jan 2003
Posts: 75,005
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,005
U.S.S.A.
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The timing was good when the car went into storage and it was not adjusted. I still removed the cap and checked rotor to terminal on compression stroke at TDC. Everything was good.. I think total timing on this car was about 38-40. Have you put a light on it to confirm its correct 5 yrs later ?
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