Fuel pump sounds like it is working, but only a small amount of fuel comes into the filter.

Asked by Jun 19, 2015 at 01:09 AM about the 1978 MG MGB

Question type: Maintenance & Repair

Car ran well, but I took it in for smog and the technician let it idle and it shut down.
Seemed like it was out of gas so I got more and restarted it. It cut off and wouldn't
restart. Is it possible some line(charcoal filter) is loose and causing no gas to be
pumped? I've tried repeatedly and can't start it. If the pump is good what else can
cause it not to pump? The pump seems new and sounds right when ignition is on.
It's a 1978 MGB

5 Answers

64,395

Just because you hear it does not mean it is pumping fuel,have the fuel pressure checked.

18,550

T_S_T is right just because you can hear it does not mean its pumping. There is a filter in the gas tank on the pump that may be clogged. Also check for collapsed and worn out rubber fuel lines that maybe sucking in air.

1 of 1 people found this helpful.
5,095

If you don't have a pressure gauge you can try the following; loosenen the banjo at the pump to see if gas is coming out? After that, go to the carb and see if it is making it that far. Be very careful doing this to avoid a fire. just loosen them enough to see a wet spot develop or a slight squirt and instantly tighten it back up. If you have pressure at both places, you probably have a carburetor problem.

5,095

Whats the word? Did you find the problem?

Finally! After much anguish and frustration I had it towed to an MG repair shop and they replaced the faulty (after market, plastic cased) fuel pump. Runs great now, new tires and it's a smooth ride. Thanks for the tips and help. I just wanted to do it on the cheap (not gonna happen these days). Smogged, registered and on the road!!

Your Answer

Add photo

Related Questions

MGB

Looking for a Used MGB in your area?

CarGurus has 69 nationwide MGB listings and the tools to find you a great deal.

ZIP:

Search MG MGB Questions

MG MGB Experts

#1 Larry Sturgis
Larry Sturgis
Reputation 80
#2 wb6epp
wb6epp
Reputation 60
#2 Lars Cats
Lars Cats
Reputation 60
View All

Related Models For Sale

Used Chevrolet Corvette
119 Great Deals out of 20,753 listings starting at $3,000
Used Ford Mustang
470 Great Deals out of 45,735 listings starting at $1,999
Used Porsche 911
94 Great Deals out of 4,510 listings starting at $9,995
Used Ford F-150
2,194 Great Deals out of 206,316 listings starting at $1,499
Used Chevrolet Impala
521 Great Deals out of 31,726 listings starting at $1,450
Used Volkswagen Beetle
166 Great Deals out of 9,557 listings starting at $1,500
Used BMW 3 Series
972 Great Deals out of 31,729 listings starting at $1,000

Used Cars For Sale

1979 MG MGB For Sale
13 listings
1977 MG MGB For Sale
13 listings

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.