wont start - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*1FaastC10* · 01-01-2004, 04:43 PM

after breaking in the cam on my 86 305, i changed the oil, and checked everything else out. i checked the timing, and it seemed to be at an acceptable point. the truck was running ok at that point. i then took it down to the gas station to put some gas in it, on the way down there if i would let off the gas it would die. when i first brought it back from the gas station, if you cracked the throttle open a bit it would run, but as soon as you let off, it would die. i went out to start it and move it the other day, and it wont even start. anybody got any ideas?

TwinTurbo · 01-01-2004, 06:33 PM

check for vacuum leaks and disconnected hoses. That's the first thing I would do

*1FaastC10* · 01-01-2004, 07:14 PM

i see no disconnected hoses, and how does one check for vac leaks if it wont start?

allthrtl · 01-01-2004, 09:26 PM

Is it getting fire? if so, do the plugs look fuel fouled?? If not, try a little starting fluid. Sounds like a fuel problem, but I may be wrong. Hard to tell from here..

Russell · 01-01-2004, 09:49 PM

might be a bad gasket somewhere...

chevyfan420 · 01-01-2004, 10:12 PM

pull a plug and check for spark. then pump throttle and check for gas

phantom dually · 01-01-2004, 10:16 PM

Also check your linkage hook up. If it is way out it may not be holding it open far enough to start.

*1FaastC10* · 01-02-2004, 03:06 AM

Quote:

Originally posted by Russell
might be a bad gasket somewhere...

all gasket surfaces were flat and true and properly prepped for new gaskets, i just put all new gaskets in it a month or so ago.

*1FaastC10* · 01-02-2004, 03:08 AM

Quote:

Originally posted by phantom dually
Also check your linkage hook up. If it is way out it may not be holding it open far enough to start.

the throttle plates should be fully closed at idle, i've tried pumping the gas, holding the throttle all the way open, nothing seems to help.

allthrtl · 01-02-2004, 06:06 AM

do you have any spark???

Tom · 01-02-2004, 01:50 PM

Fuel pump go down the hole......

Check for fuel first, then spark.

Jonboy · 01-02-2004, 07:01 PM

it sounds to me like the distributor moved. I would recheck that first.

Nvbowtie · 01-03-2004, 05:47 AM

Quote:

Originally posted by Jonboy
it sounds to me like the distributor moved. I would recheck that first.

And be very gentle with that distributer or you will get this and a bent crank, moving that distributer just a little to fast caused it to stall and engine kickback on re-start ---a $770.00 mistake I will never make again;

I had a similar problem after break-in also, but after 20 minutes of scratching heads, I looked over and noticed the see thru fuel filter was only 1/4 full, not feeding enough gas to the bowls. fixed the kink and ran like a champ, till my distributer losened up and as from above you know the rest .....

*1FaastC10* · 01-03-2004, 05:35 PM

well, its gettin fuel, and fire. just for kicks and giggles, i poured a bit of gas down the carb (didnt have any starting fluid) and it made no difference. once in a while it acts like it wants to fire, but then nothing.

allthrtl · 01-03-2004, 07:10 PM

Sounds like a possible timing issue....Assuming it's getting a good blue spark......

01-01-2004, 04:43 PM	#1
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,400	wont start after breaking in the cam on my 86 305, i changed the oil, and checked everything else out. i checked the timing, and it seemed to be at an acceptable point. the truck was running ok at that point. i then took it down to the gas station to put some gas in it, on the way down there if i would let off the gas it would die. when i first brought it back from the gas station, if you cracked the throttle open a bit it would run, but as soon as you let off, it would die. i went out to start it and move it the other day, and it wont even start. anybody got any ideas?

01-01-2004, 09:26 PM	#4
allthrtl Available for Adoption Join Date: May 2003 Location: Lubbock Tx Posts: 177	Is it getting fire? if so, do the plugs look fuel fouled?? If not, try a little starting fluid. Sounds like a fuel problem, but I may be wrong. Hard to tell from here.. __________________ 1983 C10 SWB 2001 Silverado SWB 1995 Corvette

01-01-2004, 09:49 PM	#5
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	might be a bad gasket somewhere... __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

01-01-2004, 10:12 PM	#6
chevyfan420 Registered User Join Date: Nov 2003 Location: Ancaster, Ontario, Canada eh Posts: 95	pull a plug and check for spark. then pump throttle and check for gas __________________ 80 Chevy K10 350/350turbo 86 Chevy 1/2 ton shorty project truck 79 Chevy 1/2ton 350/350turbo not much to look at... *Retired* 97 Chevy C1500 4.3/5 speed.....daily driver

01-01-2004, 10:16 PM	#7
phantom dually Project92 SWB stepside Join Date: Feb 2003 Location: Louisville KY Posts: 4,793	Also check your linkage hook up. If it is way out it may not be holding it open far enough to start. __________________ 92 C1500 stepside 496 Stroker Competiton Engineering Ladder bars/QA1 coilovers. Dana 60 rear with 4.10 gear and posi. Bonspeed Palisade 20x12 in rear w/335/30/20 and 20x8.5 front w/245/40/20. 5/8 drop with Belltech springs/DJM spindles/drop shocks. WWS Progress thread http://67-72chevytrucks.com/vboard/s...d.php?t=140448

01-01-2004, 06:33 PM	#2
TwinTurbo Registered User Join Date: Sep 2003 Location: The Netherlands Posts: 994	check for vacuum leaks and disconnected hoses. That's the first thing I would do

01-01-2004, 07:14 PM	#3
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,400	i see no disconnected hoses, and how does one check for vac leaks if it wont start?

01-02-2004, 06:06 AM	#10
allthrtl Available for Adoption Join Date: May 2003 Location: Lubbock Tx Posts: 177	do you have any spark??? __________________ 1983 C10 SWB 2001 Silverado SWB 1995 Corvette

01-02-2004, 01:50 PM	#11
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,714	Fuel pump go down the hole...... Check for fuel first, then spark. __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.

01-02-2004, 07:01 PM	#12
Jonboy Slots go on anything! Join Date: May 2003 Location: Richardson, TX Posts: 5,957	it sounds to me like the distributor moved. I would recheck that first. __________________ 1974 Jimmy- 5.3/4L80e/NP241

01-03-2004, 05:35 PM	#14
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,400	well, its gettin fuel, and fire. just for kicks and giggles, i poured a bit of gas down the carb (didnt have any starting fluid) and it made no difference. once in a while it acts like it wants to fire, but then nothing.

01-03-2004, 07:10 PM	#15
allthrtl Available for Adoption Join Date: May 2003 Location: Lubbock Tx Posts: 177	Sounds like a possible timing issue....Assuming it's getting a good blue spark...... __________________ 1983 C10 SWB 2001 Silverado SWB 1995 Corvette



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