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#1 |
Registered User
Join Date: Mar 2013
Location: Athol, ID
Posts: 9
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Running kinda funny
Having issues, when I take off slowly the engine kinda hesitates and sputters, runs fine going down the road, I did notice when it was a little bit warmer out it did not hesitate for a couple days but then it started again when the temp outside went down, maybe a coincidence but any info would help. Not much of a gearhead so please explain on my level. Thanks
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#2 |
Registered User
Join Date: Dec 2009
Location: Arizona City, AZ
Posts: 747
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Re: Running kinda funny
A bunch of stuff could be doing it. I guess first off are you seeing it when the engine is fully up to temp? And what temp is it running at? I run a 195 thermostat in mine. All of my trucks will be a bit sluggish if not to full temp.
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----------------------------------------------------------- Erik My 69 suburban http://67-72chevytrucks.com/vboard/s...d.php?t=530626 1970 C10 step Project Jiminy http://67-72chevytrucks.com/vboard/s...d.php?t=682647 RUST!? Thats just mother natures way of telling all of us.....MINE!!!! |
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#3 |
Registered User
Join Date: Mar 2013
Location: Athol, ID
Posts: 9
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Re: Running kinda funny
Yes, it is fully warmed up
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#4 |
Registered User
Join Date: Dec 2009
Location: Arizona City, AZ
Posts: 747
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Re: Running kinda funny
What engine are you running? The more info the better. Point's? Carb? age and millage? When did this start? Sorry for the long list of questions just trying to nail it down a bit.
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----------------------------------------------------------- Erik My 69 suburban http://67-72chevytrucks.com/vboard/s...d.php?t=530626 1970 C10 step Project Jiminy http://67-72chevytrucks.com/vboard/s...d.php?t=682647 RUST!? Thats just mother natures way of telling all of us.....MINE!!!! |
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#5 |
Registered User
Join Date: Oct 2013
Location: New Jersey
Posts: 1,305
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Re: Running kinda funny
Could be a timing issue or a lean carb/faulty acceleration pump issue on the carburetor. Also the choke could be partway closed too.
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"You know that little thing in your head that keeps you from saying things you shouldn't? Yeah well, I don't have one of those" 1969 Mercury Cougar Standard 4 speed 1969 Mercury Cougar XR7 convertible 1970 4WD Chevrolet Suburban 1997 4WD Chevrolet Silverado Extended Cab Short Bed (purchased new January 1997) |
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#6 |
Registered User
![]() Join Date: Jan 2011
Location: Chattanooga TN
Posts: 6,208
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Re: Running kinda funny
The hose running over to your vacuum advance could be older / dry rotted and may have developed a small crack. If the engine is warmer, the hose is warmer too and the crack is not as noticeable to the engine. If it's really cold the hose shrinks a little, cracks open up and the vacuum leak becomes an issue. May explain why you never noticed it until it got really cold.
![]() Have you made any changes to the engine recently? just a daily driver? It does sound like vacuum advance issues to me, just my first thought anyway.
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Chad 1967 C10 SWB - Project Savannah - 6.0/4L80 *Currently underway* 1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy 1986 Silverado Short Fleet - Scarlet *Sold* 1985 Silverado Short Fleet *Sold* 2022 Jeep Gladiator Mojave 2001 Jeep Cherokee XJ 4x4 - Lifted, Built 1992 Jeep Cherokee XJ 4x4 - Lifted 2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride) |
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#7 |
Registered User
Join Date: Mar 2013
Location: Athol, ID
Posts: 9
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Re: Running kinda funny
It is a 1970 c10 with a 350 engine and edlebrock carb! Which hose would that be, there are two small ones coming off the front of the carb and I believe a larger one as well
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#8 |
Registered User
Join Date: Mar 2007
Location: Displaced Floridian/Bremerton, Wa
Posts: 281
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Re: Running kinda funny
are you burning oil? if one cylinder isn't on par with the rest, the result is similar to what you describe.
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'06 2500 HD 4x4. manual transfer case, crank windows. '88 V10 Suburban 4x4,"The Pig Rig" L05, 700r4, NP208, 4x4 beater camper fun truck project. My trucks don't leak oil, they mark their territory. |
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#9 |
Registered User
Join Date: Mar 2013
Location: Athol, ID
Posts: 9
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Re: Running kinda funny
As far as I know, I am not burning oil.
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#10 |
Registered User
Join Date: Mar 2007
Location: Displaced Floridian/Bremerton, Wa
Posts: 281
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Re: Running kinda funny
when was the last time you had all of your sparkplugs out? also, how are the plugs and wires? any shorting out?
__________________
'06 2500 HD 4x4. manual transfer case, crank windows. '88 V10 Suburban 4x4,"The Pig Rig" L05, 700r4, NP208, 4x4 beater camper fun truck project. My trucks don't leak oil, they mark their territory. |
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#11 |
Registered User
Join Date: Oct 2013
Location: New Jersey
Posts: 1,305
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Re: Running kinda funny
The hose Chad is talking about is the one going from the front of the carb to the distributor.
You say it hesitates when you take off slowly. What happens when you punch it? Same hesitation? Paul
__________________
"You know that little thing in your head that keeps you from saying things you shouldn't? Yeah well, I don't have one of those" 1969 Mercury Cougar Standard 4 speed 1969 Mercury Cougar XR7 convertible 1970 4WD Chevrolet Suburban 1997 4WD Chevrolet Silverado Extended Cab Short Bed (purchased new January 1997) |
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#12 |
Registered User
Join Date: Jul 2011
Location: Des Moines, Iowa
Posts: 3,016
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Re: Running kinda funny
Try cleaning your carb (while running, spray bursts of carb cleaner in carb), maybe replace your plugs and wires. Then see if it still happens.
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project: "my happy mess" |
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#13 |
Registered User
![]() Join Date: Jan 2011
Location: Chattanooga TN
Posts: 6,208
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Re: Running kinda funny
Post a picture of your carb and distributor taken from the passenger front corner looking back toward the firewall. I'll point out which hose it would be.
Pull the hose off even,.. bend it under a good light and see if it might be a bit brittle. It could also be the vacuum advance as well as other good ideas above. Which Edelbrock carb do you have?
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Chad 1967 C10 SWB - Project Savannah - 6.0/4L80 *Currently underway* 1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy 1986 Silverado Short Fleet - Scarlet *Sold* 1985 Silverado Short Fleet *Sold* 2022 Jeep Gladiator Mojave 2001 Jeep Cherokee XJ 4x4 - Lifted, Built 1992 Jeep Cherokee XJ 4x4 - Lifted 2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride) |
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