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

texas69truck · 07-17-2007, 07:40 PM

heres the story, its a 69 chevy with a 350/th350, running a 650cfm holly. so i ran out of gas and then the truck wouldnt run without being on the gas. Towed it home and checked to see if the carb was getting gas, it was but it wouldnt idle. so i figured the float was stuck...long story short i have replaced plugs, wires, and fixed the float on the carb. now it wont even start, when i crank it i hear a horrible noise and it feels like it seizes up. the fan still spins so i know its not locked up but what could the noise be comming from? It almost sounds like its comming from the bottom half of the engine. i dont know to much about engines but to me it sounds like something is stopping the crank shaft from spinning. hopefully i am wrong.
sorry for the long post and bad description but hopefully someone can shed some light for me.
Thanks in advance,
Travis

cdowns · 07-17-2007, 07:48 PM

have you checked your oil level recently??

Longhorn Man · 07-17-2007, 08:37 PM

while that sounds stupid, you may have flooded the hell outta it and it would be down in the oil, creating a very high level on the stick.

MyakkaJeff · 07-17-2007, 08:44 PM

Sounds like it's seizing while trying to start? Are you sure you ran out of gas? Maybe a slipped timing chain or the timing is way out.

jhow66 · 07-17-2007, 10:53 PM

Take your plugs back out and crank it. Your carb is probably still flooding the cylinders with raw gas.

texas69truck · 07-18-2007, 02:04 AM

Thanks for the replies. i check my oil on a regular basis and never let it get low. I will try cranking it with the spark plugs out tommorow and see what happens. Thanks again for the advice. i cant count how many times this board has helped me out with the ol' girl.
Travis

grayw0lf · 07-18-2007, 08:58 AM

Quote:

Originally Posted by texas69truck

Thanks for the replies. i check my oil on a regular basis and never let it get low. I will try cranking it with the spark plugs out tommorow and see what happens. Thanks again for the advice. i cant count how many times this board has helped me out with the ol' girl.
Travis

I think LonghornMan was suggesting you check your oil to see if it diluted with gasoline.

68speedalert · 07-18-2007, 12:44 PM

before pulling the plugs, disconnect the coil wire and see if it helps. If it does, check you firing order. If you've got them really screwed up, it's firing out of time and making it crank hard.

07-17-2007, 07:40 PM	#1
texas69truck Registered User Join Date: Jul 2005 Location: austin texas Posts: 113	truck wont start heres the story, its a 69 chevy with a 350/th350, running a 650cfm holly. so i ran out of gas and then the truck wouldnt run without being on the gas. Towed it home and checked to see if the carb was getting gas, it was but it wouldnt idle. so i figured the float was stuck...long story short i have replaced plugs, wires, and fixed the float on the carb. now it wont even start, when i crank it i hear a horrible noise and it feels like it seizes up. the fan still spins so i know its not locked up but what could the noise be comming from? It almost sounds like its comming from the bottom half of the engine. i dont know to much about engines but to me it sounds like something is stopping the crank shaft from spinning. hopefully i am wrong. sorry for the long post and bad description but hopefully someone can shed some light for me. Thanks in advance, Travis

07-17-2007, 07:48 PM	#2
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: truck wont start have you checked your oil level recently?? __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

07-17-2007, 08:37 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: truck wont start while that sounds stupid, you may have flooded the hell outta it and it would be down in the oil, creating a very high level on the stick.

07-17-2007, 08:44 PM	#4
MyakkaJeff Junior Member Join Date: Dec 2006 Location: Florida, Myakka River Posts: 143	Re: truck wont start Sounds like it's seizing while trying to start? Are you sure you ran out of gas? Maybe a slipped timing chain or the timing is way out. __________________ '63 C10 lwb flatbed '66 C10 lwb stepside '68 C10 lwb stepside (parts) '68 C10 lwb fleetside (17 yr old son's ongoing project) '03 HUMMER H2 (wife's) '06 3500 flatbed liftgate (My work truck)

07-17-2007, 10:53 PM	#5
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Re: truck wont start Take your plugs back out and crank it. Your carb is probably still flooding the cylinders with raw gas. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

07-18-2007, 02:04 AM	#6
texas69truck Registered User Join Date: Jul 2005 Location: austin texas Posts: 113	Re: truck wont start Thanks for the replies. i check my oil on a regular basis and never let it get low. I will try cranking it with the spark plugs out tommorow and see what happens. Thanks again for the advice. i cant count how many times this board has helped me out with the ol' girl. Travis

07-18-2007, 12:44 PM	#8
68speedalert Semi-Senior Member Join Date: Feb 2003 Location: Washington, MO Posts: 390	Re: truck wont start before pulling the plugs, disconnect the coil wire and see if it helps. If it does, check you firing order. If you've got them really screwed up, it's firing out of time and making it crank hard. __________________ '68 50th Anniversery LWB Custom Fleetside, '77 305 v-8, turbo 350, factory speed alert (still works), '71 drivetrain w/front discs. Some call it ugly yellow, others call it Ochre '83 Jeep CJ-7, <80,000 miles, original owner '04 Chevy Suburban, 4x4, 2500, 6.0 ltr, Predator Diablo programmer '95 GMC K1500 Extended cab

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