My 93 XJ (I6, stick) just went through the 4th fuel pump within a year. Luckily, the first time it happened, I took it to the dealer and the next three times he changed it under warranty. However, this is getting ridiculous. I need to be able to rely on this vehicle to get me in and out of the sticks.
Any ideas what could be causing the fuel pumps to go out so quickly?
Thanks.
Kamen
Good god. You gotta figure after 4 fuel pumps there's SOMETHING in the tank that ain't right. Let us know what you find after you pull it.
Bill, I've heard of bacteria and such grow> Hi Kamen,
I suspect he may have been yanking our chains, but there are bacteria that can grow in gasoline. I am having a hard time believing that you could get enough of them to clog a fuel pump such that it would hurt it. Tanks for the memories and all....
Sure would be nice to know what is failing on the pump, as in perhaps it ain't the pump at all, or maybe fuel overpressure, etc.
Approximately 11/4/03 18:06, twaldron uttered for posterity:
Do you suppose chlorine would help? Or should I bring out the 12 gauge? Call an exorcist?
Kamen
L.W.(ßill) Hughes III wrote:
Maybe they are living on the sugar his ex-wife put in the tank? As for gasoline, feh, a veritable sun drenched beach for bacteria. There are bugs that live in concentrated sulfuric acid, at temperatures well above 300 F, in arsenic solutions that would kill every bachelor in San Diego, etc. and even some that live a coupla miles down in the crust.
Approximately 11/4/03 18:35, L.W.(ßill) Hughes III uttered for posterity:
Chlorine? Yeah, drop some pure chlorine in the gas tank. Or better yet, to avoid the smell, add some 30% or greater Hydrogen Peroxide. Be sure to have a camera rolling.... and post the results.
Approximately 11/4/03 18:46, Kamen Penev uttered for posterity:
Are these "in tank" fuel pumps? If so then they obviously would have an indication of the nature of the tank and sending unit. If it's an external pump then I hope they replaced the fuel filter when they replaced the pump. Seems logical they'd take a look at the tank in the process but under warranty they'd probably just fix the symptom until the warranty expires and then they'll do the exploratory at your expense.
Bacteria in diesel fuel is kind of interesting - they don't actually live _in_ the diesel fuel, they live in the water droplets and feed on the surrounding hydrocarbons. If you drain your diesel tank of water religiously, keep the filters fresh, and use Biobor or similar anti-microbial treatment, you will never have a single bit of trouble. Ignore those factors and you risk plugged filters and a really nasty growth throughout the entire fuel system.
I have scrubbed out more than a few aircraft (jet fuel) fuel cells that were full of yucky black growth - it ain't fun!
John Davies Spokane WA USA.
Dirt is the biggest killer of fuel pumps. Then again, it may not even be a problem with the pump it's self. Either way, somebody needs to let the guy working on it know the history on it. They need to spend a little more time and find out what's really going on.
Have sence,patience,and self-restrain,and no mischief will come.
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