new fuel pump soon? - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 9 (permalink) Old 08-14-2006, 02:04 PM Thread Starter
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new fuel pump soon?

a day or so ago, i had a hesatation, durning a drive, it feels like no fuel cond. if i put it in neut. for a moment, then put it back in gear to drive, goe's away,it did the same thing today......put it in neut. for a moment, then it drives fine.. feel's like the fuel pump might be going bad..oh yes, she is a 1984..

Last edited by bianchi1; 08-14-2006 at 02:15 PM.
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post #2 of 9 (permalink) Old 08-15-2006, 06:40 AM
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a simple test I have used before is to listen on the radio on an unused am frequency for the ignition interference, if it cuts out when your car does, that might help diagnose the problem. you might also hear the interference from the pump or injectors. good luck.
cliff
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post #3 of 9 (permalink) Old 08-15-2006, 07:02 AM
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A hesitation in an alfa can be caused by lots of different things. I wouldn't jump right out and throw a $180 fuel pump in without further investigation.

Fuel pump clues:
Listen for the pump to get noisy....a humming noise. The noise does not have to be present during the hesitation for this to indicate a possibly bad (or going bad) pump.

After driving your car for a half hour or so, check the fuel pump fuse and holder located under the package shelf behind the passenger seat. See if the fuse holder, wire etc is warm to the touch. A little bit is ok....alot indicates your pump may be drawing more current than normal.

Other than that, check normal stuff, plugs, rotor, distributor cap, sensors, air hose connections etc.

Good luck.

[FONT="Microsoft Sans Serif"]Don - 1984 Spider Veloce[/FONT]
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post #4 of 9 (permalink) Old 08-15-2006, 11:04 AM
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Just sounds like a clogged fuel filter to me...

'69 1750 GTV - XC70 Q4
'88 Spider Veloce
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post #5 of 9 (permalink) Old 08-15-2006, 11:21 AM Thread Starter
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Smile fliter..

just changed it 2 months ago............but the pump looks like the org. 22 years old?
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post #6 of 9 (permalink) Old 08-15-2006, 11:24 AM
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What quality and brand of gas do you use?

'69 1750 GTV - XC70 Q4
'88 Spider Veloce
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post #7 of 9 (permalink) Old 08-15-2006, 04:39 PM
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b1 - have you noticed any correlation between fuel level & stumble? Had a similar prblem with an RX7 - turned out to be water/crud in the tank. You mighr check to make sure your "new" filter is still clean.

Ciao bello...
Doug T.

[I]"Dang' - that thing's got a HEMI!" [/I]
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post #8 of 9 (permalink) Old 08-15-2006, 05:11 PM Thread Starter
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fuel..

ampm gas, never a problem before....and i took out the tank 4 months ago and cleanend it out( took it out also) today drove the car.. no problems.. i am thinking is was an air buble, that some how got in the system.
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post #9 of 9 (permalink) Old 08-16-2006, 06:32 AM
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when my son Dan had a leaking gas tank on his motorcycle, he cleaned it and used Kreem to seal it, for some reason, a small thread of Kreem got past the filters and into one carb causing it to run over. not the same as an Alfa's fuel system, but still could be something circulating around or even an air leak in a line from the tank to the fuel pump causing a bubble.
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