Fuel leak between the starter and fuel/water separator on 98' 12V
motor. Anyone know if this is a no-brainer? I've washed the area with
degreaser and rinsed and dried, but haven't started it yet to look/feel
for the leak. Waiting on some daylight so I do it right.
If someone has had similar problem or can help me diagnose I'd be
forever grateful. Just don't have the time right now to go ripping the
thing apart chasing a fuel leak.
Nah, he's on the low pressure side, well away from the injector lines -
10-15 psi at most. The only danger there is getting your fingers a little
As to the problem itself, it could be a rotted-out section of fuel line
itself, though that usually manifests as an air leak, causing very
poor/rough running. The fittings on the fuel filter canister (particularly
the heater element) have been known to leak, as well. A technique that
works well is to wash the area down with degreaser, let it dry, then blow a
little talcum powder around the suspected area. The talc will readily show
the tracks of any leak, leading you right back to the source.
I know it's all low pressure before the injection pump but I get nervous
when people say they are going to feel around for a leak anywhere near high
pressure systems. It's possible the leak is in an injector line spraying
fuel into that area. It may not be likely, but still possible.
If you have the OEM fuel filter, you might want to make sure the old
gasket isn't still stuck to the housing from the last change. The
other thing that happens on 1st gens is the rubber return hose cracks.
I have both on 89 and a 00, so have run into some of these problems.
If its the filter gasket, you'll find the time after it blows out on
the road. If it's the return hose, you might have hard start or other
On 4 Mar 2006 18:24:39 -0800, randolf email@example.com wrote:
I have had to replace both rubber lines on my truck. They both had rotted
out near where they connect to the steel lines near the motor. Really long
arms would be a big asset to do this job!. Lorne
Thanks for all the replies. I got out this morning and drove it hard
and stopped after every few miles to look for leak, but only thing I
came across was a little film of diesel around where the fuel/water
separator attaches to the mount (guess it's screwed on?). How do I
It was NOT enough diesel to suggest where all the diesel came from.
Saturday I found the starter drenched in diesel and it dripping from
the bottom of the bell housing. This "film" was small in comparison.
I will mention that before I degreased and cleaned the area Saturday I
cracked open the fuel/water separator and made darn skippy it was
closed firmly. Wonder if it hadn't cracked open under vibration and
that's where all that diesel came from?
Note: I did inspect the rubber fuel lines that run around the area and
they were never degreased/washed and have always been dry as a bone.
It would suggest they haven't rotted yet...but I'm no expert obviously.
Where is the fuel filter on my 12V? Inside the fuel/water separator?
Thinking it might could use changing.
I've never changed the fuel filter on mine. I got it with 120k and now
it's at 170k. No fuel filter change. Maybe it's time???
I did inspect the rubber fuel line piece behind the filter and up
against the block. It kinda looks like it's in the process of
cracking. When I drive to see daddy-in-law this weekend I will employ
his help in replacing both the filer and that stupid rubber line.
How do you tighten or remove the filter/fuel/water separator????
If you cange it and haven't done it before and it has the old style
connector on the bottom of the filter can disconnect it first so you
don't mess up the wires, and when moving the probe plug to the new
can, be careful, as it is plastic and although sturdy, you can break
it. Clean the probe electrodes. Oil "O" ring before screwing it back
on. Also oil the filter can gasket(make sure the old one is off).
Don't overtighten the new can.
On Mon, 06 Mar 2006 04:46:14 GMT, "Tom Lawrence"
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