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73-87chevytrucks.com
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73-87 Chevy _ GMC Trucks
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Fuel Systems and Drivability
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HELP problem with gaspedal / carb
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Topic: HELP problem with gaspedal / carb (Read 6035 times)
JohnnyPopper
Senior Member
Posts: 2557
Old Goof
Re: HELP problem with gaspedal / carb
«
Reply #15 on:
February 03, 2019, 04:15:23 PM »
Go with Irish's suggestion: disco your fuel line, direct it into a jar and have your buddy crank the engine over.
While your at it, and he is cranking, pour a tiny bit of gas down the carb and see what happens. If gas is gushing out of your fuel line, have him stop.
That means Your fuel pump is good, look for a clogged fuel filter at the carburetor.
If it doesn't gush gas, your fuel pump is not good. Replace and try again.
Logged
1957 Apache 3100 235 Inline 6, 3 on the tree
1973 C-20, 3+3 454 4BBL TH400 Water Injection
1978 K-10, 350 4BBL TH350 NP203 M.M. Part time Kit/Hubs
1980 C-10 under construction
sammysamm
Newbie
Posts: 49
Newbie
Re: HELP problem with gaspedal / carb
«
Reply #16 on:
February 21, 2019, 09:54:59 PM »
Fixed the problem. Thanks for all the help
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sammysamm
Newbie
Posts: 49
Newbie
ANYONE else have this fuel problem?
«
Reply #17 on:
February 21, 2019, 10:04:17 PM »
ANYONE have fuel have problems?
I recently had a no-start issue but it turns out my gas tank was low on fuel. Possible leak. My truck was on a hill (not that steep)with 2 gallons in the tank and it would not start. After being pushed to flat ground and topped up with another gallon the truck started up fine.... Why? Is It common for a truck to not be able to be started on incline? Seems strange. It turns out I have a possible leak but again not sure where.something black ish is making small puddle s . I have the C20 with the Dual tanks.. does anyone else have a problem with the fuel gauge reading incorrectly? Sometimes when I have low low fuel it will say I have three quarter tank/full.
Thanks
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roundhouse
Senior Member
Posts: 1474
Newbie
Re: ANYONE else have this fuel problem?
«
Reply #18 on:
February 21, 2019, 10:35:12 PM »
I had vehicles that were unable to draw the last little bit of gas
Just keep more gas in it
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85 CA SIERRA 1500
Newbie
Posts: 15
Newbie
Re: HELP problem with gaspedal / carb
«
Reply #19 on:
July 22, 2019, 10:40:45 PM »
I know that this is an old thread, but, just wanted to add that I have found the gauges (especially the gas) to be rather inconsistent and not always accurate.
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sammysamm
Newbie
Posts: 49
Newbie
Re: HELP problem with gaspedal / carb
«
Reply #20 on:
October 14, 2019, 12:06:02 PM »
yea i noticed (for cold start) that i need to pump gas pedal for about 10 seconds then wait another 10 seconds . then she starts fine. with open choke.
also i have noticed gas gauges work but they are not exact in anyway, it will show full for first 100 miles and then slowly go down. the gauges usually stop for me around 1/4 quarter tank. but the truck is not empty. overall my gauges work but i agree with you not accurate..
but hey.. she is an old lady after all. her memory aint great..
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JohnnyPopper
Senior Member
Posts: 2557
Old Goof
Re: HELP problem with gaspedal / carb
«
Reply #21 on:
October 14, 2019, 12:46:46 PM »
Let's remove some variables, like spark first.
While cranking the engine, pour a small amount of gas down the carb. If it fires temporarily, you have eliminated the ignition system as a problem.
Next, take a tiny funnel, and pour 3-4 ounces of gas down the carb bowl vent. It's the 3/8 metal tube at the front of the carb. Be careful and take your time.
Next try to start the truck. It should run for few minutes until you use up the gas just poured in.
The time it runs may end your problem, if it allows the fuel pump to fill the carb bowl.
If it doesn't continue to run, you have reduced the problem to the following:
Fuel pump, fuel filter(s), fuel lines.
Eliminate them one at a time, starting with filters. Don't miss the one at the carb, most guys don't know it's there.
Logged
1957 Apache 3100 235 Inline 6, 3 on the tree
1973 C-20, 3+3 454 4BBL TH400 Water Injection
1978 K-10, 350 4BBL TH350 NP203 M.M. Part time Kit/Hubs
1980 C-10 under construction
bd
Global Moderator
Senior Member
Posts: 6454
Re: HELP problem with gaspedal / carb
«
Reply #22 on:
October 14, 2019, 02:03:31 PM »
Ummm...
I suppose I should be grateful that I'm not the only one who loses track of time...
The OP added gasoline to the fuel tank last
February
and resolved the no-start problem.
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Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)
JohnnyPopper
Senior Member
Posts: 2557
Old Goof
Re: HELP problem with gaspedal / carb
«
Reply #23 on:
October 14, 2019, 09:03:36 PM »
Oh gawd! LOL, here I thought I was being helpful and didn't see that there were more pages!
Old Goof!
Logged
1957 Apache 3100 235 Inline 6, 3 on the tree
1973 C-20, 3+3 454 4BBL TH400 Water Injection
1978 K-10, 350 4BBL TH350 NP203 M.M. Part time Kit/Hubs
1980 C-10 under construction
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73-87 Chevy _ GMC Trucks
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HELP problem with gaspedal / carb