Truck does not start well..? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

static22 · 10-12-2005, 09:43 PM

Quote:

Originally Posted by squint

No it never did this with the old engine.. It fired right up. no gas needed..
and no it does not usually fire.. it just turns over and eventually fires.

It sounds like it could be electrical. Maybe when you were putting all the componets back on and wiring them back up you didn't get a wire crimped well or one is not making good contact until the engine warms up and creates a better contact by causing the metal or wire to swell slightly. Has it done this from the first time you started the new motor? It may take a little while to find but just start ruling out things one at a time. How "new" is the motor?

woody96 · 10-13-2005, 08:30 AM

Well, I replaced the ignition module (the last time this did this...I determined I was getting gas, but no spark....); and so far this fixed the problem.....

squint · 10-14-2005, 02:34 AM

No it started a while after i put in the engine.. the engine is brand new.. ( 8 months old ) .. I am going to try the ignition module this weekend if i have time.. Its only $50..

woody96 · 10-14-2005, 08:39 AM

Quote:

Originally Posted by squint

No it started a while after i put in the engine.. the engine is brand new.. ( 8 months old ) .. I am going to try the ignition module this weekend if i have time.. Its only $50..

Check carquest...got mine for $22......

Scrubby · 10-14-2005, 10:58 AM

Usually when the module goes, it goes all the way and you can't get it started at all. But, they do flakey things some times.

A quick way to tell if it is the module or anything electrical is to pull a spark plug. Connect it back to the wire and ground the electrode to the block and have someone turn it over. If you see a spark, you are good. You can also hook up a timing light if you have one to see if your are getting spark.

If you are seeing spark, I would guess everything electrical is ok. My burb had the same problems you have until I rebuilt the quadrajet. Maybe something is clogged or out of adjustment.

woody96 · 10-14-2005, 12:00 PM

Quote:

Originally Posted by Scrubby

Usually when the module goes, it goes all the way and you can't get it started at all. But, they do flakey things some times.

A quick way to tell if it is the module or anything electrical is to pull a spark plug. Connect it back to the wire and ground the electrode to the block and have someone turn it over. If you see a spark, you are good. You can also hook up a timing light if you have one to see if your are getting spark.

If you are seeing spark, I would guess everything electrical is ok. My burb had the same problems you have until I rebuilt the quadrajet. Maybe something is clogged or out of adjustment.

Tried this and got no spark.....hence, changed out the module...so far, so good.....

squint · 10-14-2005, 08:55 PM

Quote:

Originally Posted by woody96

Check carquest...got mine for $22......

Im sure thats US $$..

.. + Shipping.. I doubt it would be less than $50.. heh.. Thats the only bad thing about living in Canada.. I pretty much have to suffer..

squint · 10-14-2005, 09:37 PM

Quote:

Originally Posted by Scrubby

Usually when the module goes, it goes all the way and you can't get it started at all. But, they do flakey things some times.

A quick way to tell if it is the module or anything electrical is to pull a spark plug. Connect it back to the wire and ground the electrode to the block and have someone turn it over. If you see a spark, you are good. You can also hook up a timing light if you have one to see if your are getting spark.

If you are seeing spark, I would guess everything electrical is ok. My burb had the same problems you have until I rebuilt the quadrajet. Maybe something is clogged or out of adjustment.

Sweet.. thanks for the advice.. I have a timing light.. I will hook it up tomorrow..

Matt_305 · 10-14-2005, 11:07 PM

First with my truck (although it is the straight 6 with the 2bbl rochester) I have to pump the gas many times saaaaaay 10? because the pumps bad, fires right up after that though. Secondly, if the starter was off I believe gm starters need shimmed to line up properly? Don't know if that would effect your problem or not, it just made the one in my brothers pontiac (85 parisienne 305) make a slightly more sharp sound upon start up. Doubt any of this will help but just throwing ideas out there.

Matt

ureckme · 10-16-2005, 04:15 AM

May be the choke need to be leaned out a little?

squint · 10-16-2005, 06:40 AM

ya.. might be the need to be leaned out. .. Im pretty sure the pump is fine..

I wish try yout guys' ideas tonight though.

10-13-2005, 08:30 AM	#27
woody96 Registered User Join Date: Jan 2005 Location: Chapin, SC Posts: 392	Well, I replaced the ignition module (the last time this did this...I determined I was getting gas, but no spark....); and so far this fixed the problem..... __________________ "Fighting for our freedoms....."

10-14-2005, 11:07 PM	#34
Matt_305 Registered User Join Date: Dec 2003 Location: Nova Scotia, Canada Posts: 102	First with my truck (although it is the straight 6 with the 2bbl rochester) I have to pump the gas many times saaaaaay 10? because the pumps bad, fires right up after that though. Secondly, if the starter was off I believe gm starters need shimmed to line up properly? Don't know if that would effect your problem or not, it just made the one in my brothers pontiac (85 parisienne 305) make a slightly more sharp sound upon start up. Doubt any of this will help but just throwing ideas out there. Matt __________________ 1981 GMC Sierra 1500 4.1L I6 1985 GMC Sierra 1500 5.0L V8 (Parts Truck) Last edited by Matt_305; 10-14-2005 at 11:08 PM.

10-16-2005, 04:15 AM	#35
ureckme ureckmefixit2@cox.net Join Date: Dec 2004 Location: Mesa AZ. (Phoenix) Posts: 1,284	Re: Truck does not start well..? May be the choke need to be leaned out a little? __________________ That's U RECK ME FIX it 2 74 Chevy Short Bed 355ci Sportsman II 64cc Angle Plug Crower Custom Grind .462in .486ex Dyno Test 422hp @ 5600 And it's got a Holley 3.73 Gears 12 Bolt 3.73 w/Posi 700R4 Going In I'm a Body Man So There! That's why it's not painted

10-16-2005, 06:40 AM	#36
squint Registered User Join Date: Jul 2005 Location: Vancouver Posts: 195	Re: Truck does not start well..? ya.. might be the need to be leaned out. .. Im pretty sure the pump is fine.. I wish try yout guys' ideas tonight though.

10-14-2005, 02:34 AM	#28
squint Registered User Join Date: Jul 2005 Location: Vancouver Posts: 195	No it started a while after i put in the engine.. the engine is brand new.. ( 8 months old ) .. I am going to try the ignition module this weekend if i have time.. Its only $50..

10-14-2005, 10:58 AM	#30
Scrubby Check out GMTrucks.org Join Date: Sep 2003 Location: Boise, Id Posts: 284	Usually when the module goes, it goes all the way and you can't get it started at all. But, they do flakey things some times. A quick way to tell if it is the module or anything electrical is to pull a spark plug. Connect it back to the wire and ground the electrode to the block and have someone turn it over. If you see a spark, you are good. You can also hook up a timing light if you have one to see if your are getting spark. If you are seeing spark, I would guess everything electrical is ok. My burb had the same problems you have until I rebuilt the quadrajet. Maybe something is clogged or out of adjustment.



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