Multiple fuel pump failures
 

'89 YJ/ 258
313,000+ miles (re-man motor 11,000+ miles)

Over the last few years, I have had several fuel pumps fail. I just
replaced one that failed yesterday, which replaced one from July '07, which
replaced one from Oct. '06, etc.

So far, they have always failed at start-up, so no problems while driving,
but it can be a little scary to think 'what if' while you are way out in the
middle of no where.

I started wondering if crud from the fuel tank might be the problem, so I
installed a clear filter just prior to the pump this time.

One thing I noticed on this one was that the lever only had a very narrow
wear mark (at the most, 1/16") on it, instead of all the way across.

Any ideas other then I need to pull the tank and clean it? The filter should
answer that one.

Larry

Re: Multiple fuel pump failures
 

That narrow wear mark could be the cam going bad or just that the lever
wasn't made properly. Suction filters have the disadvantage that
pressure loss in the suction side is going to hurt performance a lot
more than in the pressure side. On the other hand they do protect the
filter from crud. Is the filter stopped up? If that is a metal fuel
tank, which I think it is, then it is probably full of nasty stuff. How
about the fuel lines?

Cheers,

Earle

"Retiredff" <lbatter@bogfeet.net> wrote in message
news:13j414g88o5j045@corp.supernews.com...
> '89 YJ/ 258
> 313,000+ miles (re-man motor 11,000+ miles)
>
> Over the last few years, I have had several fuel pumps fail. I just
> replaced one that failed yesterday, which replaced one from July '07,
which
> replaced one from Oct. '06, etc.
>
> So far, they have always failed at start-up, so no problems while
driving,
> but it can be a little scary to think 'what if' while you are way out
in the
> middle of no where.
>
> I started wondering if crud from the fuel tank might be the problem,
so I
> installed a clear filter just prior to the pump this time.
>
> One thing I noticed on this one was that the lever only had a very
narrow
> wear mark (at the most, 1/16") on it, instead of all the way across.
>
> Any ideas other then I need to pull the tank and clean it? The filter
should
> answer that one.
>
> Larry
>
>



--
Posted via a free Usenet account from http://www.teranews.com

Re: Multiple fuel pump failures
 

That narrow wear mark could be the cam going bad or just that the lever
wasn't made properly. Suction filters have the disadvantage that
pressure loss in the suction side is going to hurt performance a lot
more than in the pressure side. On the other hand they do protect the
filter from crud. Is the filter stopped up? If that is a metal fuel
tank, which I think it is, then it is probably full of nasty stuff. How
about the fuel lines?

Cheers,

Earle

"Retiredff" <lbatter@bogfeet.net> wrote in message
news:13j414g88o5j045@corp.supernews.com...
> '89 YJ/ 258
> 313,000+ miles (re-man motor 11,000+ miles)
>
> Over the last few years, I have had several fuel pumps fail. I just
> replaced one that failed yesterday, which replaced one from July '07,
which
> replaced one from Oct. '06, etc.
>
> So far, they have always failed at start-up, so no problems while
driving,
> but it can be a little scary to think 'what if' while you are way out
in the
> middle of no where.
>
> I started wondering if crud from the fuel tank might be the problem,
so I
> installed a clear filter just prior to the pump this time.
>
> One thing I noticed on this one was that the lever only had a very
narrow
> wear mark (at the most, 1/16") on it, instead of all the way across.
>
> Any ideas other then I need to pull the tank and clean it? The filter
should
> answer that one.
>
> Larry
>
>



--
Posted via a free Usenet account from http://www.teranews.com

Re: Multiple fuel pump failures
 

That narrow wear mark could be the cam going bad or just that the lever
wasn't made properly. Suction filters have the disadvantage that
pressure loss in the suction side is going to hurt performance a lot
more than in the pressure side. On the other hand they do protect the
filter from crud. Is the filter stopped up? If that is a metal fuel
tank, which I think it is, then it is probably full of nasty stuff. How
about the fuel lines?

Cheers,

Earle

"Retiredff" <lbatter@bogfeet.net> wrote in message
news:13j414g88o5j045@corp.supernews.com...
> '89 YJ/ 258
> 313,000+ miles (re-man motor 11,000+ miles)
>
> Over the last few years, I have had several fuel pumps fail. I just
> replaced one that failed yesterday, which replaced one from July '07,
which
> replaced one from Oct. '06, etc.
>
> So far, they have always failed at start-up, so no problems while
driving,
> but it can be a little scary to think 'what if' while you are way out
in the
> middle of no where.
>
> I started wondering if crud from the fuel tank might be the problem,
so I
> installed a clear filter just prior to the pump this time.
>
> One thing I noticed on this one was that the lever only had a very
narrow
> wear mark (at the most, 1/16") on it, instead of all the way across.
>
> Any ideas other then I need to pull the tank and clean it? The filter
should
> answer that one.
>
> Larry
>
>



--
Posted via a free Usenet account from http://www.teranews.com

Re: Multiple fuel pump failures
 

Earle,

I'm also thinking the wear mark just shows the lever was not correct. The
others I replaced showed wear across the lever.

The clear filter was just put on today, so stopped up was not the issue in
the past. And, yes, it is a metal tank, which is what made me start thinking
there might be a crud issue.

Every time I replaced the pump, I also replaced the regular fuel filter at
the carb, and there has never been any debris come out of it when I pour off
the fuel from the filter. I also replaced all the short pieces of rubber
fuel lines connecting everything together each time.

As for the lines to and from the tank, I have not messed with them. To me,
it would not make sense that they might be the trouble, just based on
everything being trouble free, then sudden failure. But then, what do I
know?

When it fails, fuel flow drops to near zero when I take the line off of the
carb filter and turn the motor over. When it is working, I get a strong flow
from the line.

Larry

Earle Horton wrote:
> That narrow wear mark could be the cam going bad or just that the
> lever wasn't made properly. Suction filters have the disadvantage
> that pressure loss in the suction side is going to hurt performance a
> lot more than in the pressure side. On the other hand they do
> protect the filter from crud. Is the filter stopped up? If that is
> a metal fuel tank, which I think it is, then it is probably full of
> nasty stuff. How about the fuel lines?
>
> Cheers,
>
> Earle
>
> "Retiredff" <lbatter@bogfeet.net> wrote in message
> news:13j414g88o5j045@corp.supernews.com...
>> '89 YJ/ 258
>> 313,000+ miles (re-man motor 11,000+ miles)
>>
>> Over the last few years, I have had several fuel pumps fail. I just
>> replaced one that failed yesterday, which replaced one from July
>> '07, which replaced one from Oct. '06, etc.
>>
>> So far, they have always failed at start-up, so no problems while
>> driving, but it can be a little scary to think 'what if' while you
>> are way out in the middle of no where.
>>
>> I started wondering if crud from the fuel tank might be the problem,
>> so I installed a clear filter just prior to the pump this time.
>>
>> One thing I noticed on this one was that the lever only had a very
>> narrow wear mark (at the most, 1/16") on it, instead of all the way
>> across.
>>
>> Any ideas other then I need to pull the tank and clean it? The
>> filter should answer that one.
>>
>> Larry

Re: Multiple fuel pump failures
 

Earle,

I'm also thinking the wear mark just shows the lever was not correct. The
others I replaced showed wear across the lever.

The clear filter was just put on today, so stopped up was not the issue in
the past. And, yes, it is a metal tank, which is what made me start thinking
there might be a crud issue.

Every time I replaced the pump, I also replaced the regular fuel filter at
the carb, and there has never been any debris come out of it when I pour off
the fuel from the filter. I also replaced all the short pieces of rubber
fuel lines connecting everything together each time.

As for the lines to and from the tank, I have not messed with them. To me,
it would not make sense that they might be the trouble, just based on
everything being trouble free, then sudden failure. But then, what do I
know?

When it fails, fuel flow drops to near zero when I take the line off of the
carb filter and turn the motor over. When it is working, I get a strong flow
from the line.

Larry

Earle Horton wrote:
> That narrow wear mark could be the cam going bad or just that the
> lever wasn't made properly. Suction filters have the disadvantage
> that pressure loss in the suction side is going to hurt performance a
> lot more than in the pressure side. On the other hand they do
> protect the filter from crud. Is the filter stopped up? If that is
> a metal fuel tank, which I think it is, then it is probably full of
> nasty stuff. How about the fuel lines?
>
> Cheers,
>
> Earle
>
> "Retiredff" <lbatter@bogfeet.net> wrote in message
> news:13j414g88o5j045@corp.supernews.com...
>> '89 YJ/ 258
>> 313,000+ miles (re-man motor 11,000+ miles)
>>
>> Over the last few years, I have had several fuel pumps fail. I just
>> replaced one that failed yesterday, which replaced one from July
>> '07, which replaced one from Oct. '06, etc.
>>
>> So far, they have always failed at start-up, so no problems while
>> driving, but it can be a little scary to think 'what if' while you
>> are way out in the middle of no where.
>>
>> I started wondering if crud from the fuel tank might be the problem,
>> so I installed a clear filter just prior to the pump this time.
>>
>> One thing I noticed on this one was that the lever only had a very
>> narrow wear mark (at the most, 1/16") on it, instead of all the way
>> across.
>>
>> Any ideas other then I need to pull the tank and clean it? The
>> filter should answer that one.
>>
>> Larry

Re: Multiple fuel pump failures
 

Earle,

I'm also thinking the wear mark just shows the lever was not correct. The
others I replaced showed wear across the lever.

The clear filter was just put on today, so stopped up was not the issue in
the past. And, yes, it is a metal tank, which is what made me start thinking
there might be a crud issue.

Every time I replaced the pump, I also replaced the regular fuel filter at
the carb, and there has never been any debris come out of it when I pour off
the fuel from the filter. I also replaced all the short pieces of rubber
fuel lines connecting everything together each time.

As for the lines to and from the tank, I have not messed with them. To me,
it would not make sense that they might be the trouble, just based on
everything being trouble free, then sudden failure. But then, what do I
know?

When it fails, fuel flow drops to near zero when I take the line off of the
carb filter and turn the motor over. When it is working, I get a strong flow
from the line.

Larry

Earle Horton wrote:
> That narrow wear mark could be the cam going bad or just that the
> lever wasn't made properly. Suction filters have the disadvantage
> that pressure loss in the suction side is going to hurt performance a
> lot more than in the pressure side. On the other hand they do
> protect the filter from crud. Is the filter stopped up? If that is
> a metal fuel tank, which I think it is, then it is probably full of
> nasty stuff. How about the fuel lines?
>
> Cheers,
>
> Earle
>
> "Retiredff" <lbatter@bogfeet.net> wrote in message
> news:13j414g88o5j045@corp.supernews.com...
>> '89 YJ/ 258
>> 313,000+ miles (re-man motor 11,000+ miles)
>>
>> Over the last few years, I have had several fuel pumps fail. I just
>> replaced one that failed yesterday, which replaced one from July
>> '07, which replaced one from Oct. '06, etc.
>>
>> So far, they have always failed at start-up, so no problems while
>> driving, but it can be a little scary to think 'what if' while you
>> are way out in the middle of no where.
>>
>> I started wondering if crud from the fuel tank might be the problem,
>> so I installed a clear filter just prior to the pump this time.
>>
>> One thing I noticed on this one was that the lever only had a very
>> narrow wear mark (at the most, 1/16") on it, instead of all the way
>> across.
>>
>> Any ideas other then I need to pull the tank and clean it? The
>> filter should answer that one.
>>
>> Larry

Re: Multiple fuel pump failures
 

Retiredff wrote:
> '89 YJ/ 258
> 313,000+ miles (re-man motor 11,000+ miles)
>
> Over the last few years, I have had several fuel pumps fail. I just
> replaced one that failed yesterday, which replaced one from July '07,
> which replaced one from Oct. '06, etc.
>
> So far, they have always failed at start-up, so no problems while
> driving, but it can be a little scary to think 'what if' while you
> are way out in the middle of no where.
>
> I started wondering if crud from the fuel tank might be the problem,
> so I installed a clear filter just prior to the pump this time.
>
> One thing I noticed on this one was that the lever only had a very
> narrow wear mark (at the most, 1/16") on it, instead of all the way
> across.

Could be the pump lobe. My last chevy 305 V8 tended to wear lobes
and after two pumps and one cam I went with an electric.

> Any ideas other then I need to pull the tank and clean it? The filter
> should answer that one.

At this point I'd just slap on a blockoff plate and install an electric
pump and pressure regulator.

--
DougW

Re: Multiple fuel pump failures
 

Retiredff wrote:
> '89 YJ/ 258
> 313,000+ miles (re-man motor 11,000+ miles)
>
> Over the last few years, I have had several fuel pumps fail. I just
> replaced one that failed yesterday, which replaced one from July '07,
> which replaced one from Oct. '06, etc.
>
> So far, they have always failed at start-up, so no problems while
> driving, but it can be a little scary to think 'what if' while you
> are way out in the middle of no where.
>
> I started wondering if crud from the fuel tank might be the problem,
> so I installed a clear filter just prior to the pump this time.
>
> One thing I noticed on this one was that the lever only had a very
> narrow wear mark (at the most, 1/16") on it, instead of all the way
> across.

Could be the pump lobe. My last chevy 305 V8 tended to wear lobes
and after two pumps and one cam I went with an electric.

> Any ideas other then I need to pull the tank and clean it? The filter
> should answer that one.

At this point I'd just slap on a blockoff plate and install an electric
pump and pressure regulator.

--
DougW

Re: Multiple fuel pump failures
 

Retiredff wrote:
> '89 YJ/ 258
> 313,000+ miles (re-man motor 11,000+ miles)
>
> Over the last few years, I have had several fuel pumps fail. I just
> replaced one that failed yesterday, which replaced one from July '07,
> which replaced one from Oct. '06, etc.
>
> So far, they have always failed at start-up, so no problems while
> driving, but it can be a little scary to think 'what if' while you
> are way out in the middle of no where.
>
> I started wondering if crud from the fuel tank might be the problem,
> so I installed a clear filter just prior to the pump this time.
>
> One thing I noticed on this one was that the lever only had a very
> narrow wear mark (at the most, 1/16") on it, instead of all the way
> across.

Could be the pump lobe. My last chevy 305 V8 tended to wear lobes
and after two pumps and one cam I went with an electric.

> Any ideas other then I need to pull the tank and clean it? The filter
> should answer that one.

At this point I'd just slap on a blockoff plate and install an electric
pump and pressure regulator.

--
DougW