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11/18/10 10:43am - Original Message: 'fuel pump?'
legsdiamond
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St. Louis, MO - USA

Vette(s):
1976 Corvette

Joined: 2/5/2010
Posts: 43
I have a 1976 vette. When I take it on long drives it sputters like its going to die. Also hard to start after long drives. It only happens on long drives. Could it be fuel pump?
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11/18/10 11:05am - Reply: 'fuel pump?'
yostusota
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
Sounds like you may have a little vapor lock going on..
Rich


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11/18/10 11:06am - Reply: 'fuel pump?'
MikeMc71
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Tucson, AZ - USA

Vette(s):
1970 White L-46 Air Roadster, 1971 White LT1 Coupe, 1971 Red Auto Air Coupe, 383 stroker, 430 HP, 2002 Millennium Yellow Auto Coupe

Joined: 10/7/2007
Posts: 341
Hmmm.....a fuel pump either works or it doesn't. I think I would look more for a vapor lock condition caused by heat build-up.

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11/18/10 2:39pm - Reply: 'fuel pump?'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19449
Could also be crap in the fuel tank, stopping up the sock as you drive. Once the car sits for a while, some of the crap will fall off the sock, and then you can start the whole process all over again on the next drive.
Another thing that could cause this is a fuel tank that is not venting properly. Try your next long drive with the filler cap loose, and see if that helps anything.


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11/22/10 9:11am - Reply: 'fuel pump?'
legsdiamond
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St. Louis, MO - USA

Vette(s):
1976 Corvette

Joined: 2/5/2010
Posts: 43
How would I solve a vapor lock problem?

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11/22/10 12:36pm - Reply: 'fuel pump?'
Ron 78 Lifetime Member
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BINGHAMTON, NY - USA

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Joined: 7/19/2003
Posts: 3805
insulate the fuel line from the pump up to the carb,put a thicker insulating gasket between the carb and intake manifold.in the old days we would put insulation and wooden clothes pins on the fuel line,the clothes pins worked as a heat sink,wasn't purty but it workedThumbs Up.something like an asbestos wrap would work,but not asbestos,one of the other guys in here,prolly has another idea.you just gotta keep the high heat off the fuel line,an that engine compartment gets pretty hotConfused

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11/22/10 8:11pm - Reply: 'fuel pump?'
Almond81Vette
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Stanley, NC - USA

Vette(s):
1981, dark blue w/carmel interior. 350 stock, auto tranny, Q-jet carb, ECM box

Joined: 8/9/2010
Posts: 91
Be sure and check your "S" hose from the frame rail's line to the fuel pump. Was my problem on my '81......after some expenses that weren't needed. Live and learn but do check that S hose.

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11/22/10 8:36pm - Reply: 'fuel pump?'
dskopp
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Oak Creek, WI - USA

Vette(s):
1981 Great White Shark. Red Interior, 350/190hp. PS, PB (SS), A/C CC, T-Tops, Going to remain as Stock as possible. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vetts Car Club. 175,000 Original miles!!

Joined: 5/21/2008
Posts: 1956
Good idea from Tommy.  He has had quite a few problems in the past but is learning about his 81 !!
Dan


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11/24/10 1:39pm - Reply: 'fuel pump?'
VetteSpecialties
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Mounds View, MN - USA

Vette(s):
70 LT1 coupe, 69 350 HP coupe, 69 390HP 427 coupe, 71 LS5 convert, 85 coupe, 93 coupe

Joined: 5/24/2007
Posts: 1031
All of the above are good things to check.  The only additional idea I have is the possibility of the ignition module failing as it heat soaks.  It seems less likely than the fuel ideas above, but worth a check if those don't work.

Larry


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