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post #1 of 7 (permalink) Old 12-29-02, 01:42 PM Thread Starter
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EL Hot Fuel Tank

How hot does your fuel tank run ? After a long run from the mountains towing our ski boat I noticed that the fuel tank in our I6 EL wagon was red hot - too hot to touch. I gather this is heat soak from the engine bay as the fuel is circulated by the fuel injection system - 'round the fuel rail and back to the tank. I expected warm but not that hot. Even the towbar and chasis were red hot. Engine temps were normal except when running up steep hills where it climbed up to the top 1/4. Air temp was about 36 degrees.

Pat.

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post #2 of 7 (permalink) Old 12-29-02, 02:25 PM
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Re: EL Hot Fuel Tank

Quote:
Originally posted by psproule
How hot does your fuel tank run ? After a long run from the mountains towing our ski boat I noticed that the fuel tank in our I6 EL wagon was red hot - too hot to touch. I gather this is heat soak from the engine bay as the fuel is circulated by the fuel injection system - 'round the fuel rail and back to the tank. I expected warm but not that hot. Even the towbar and chasis were red hot. Engine temps were normal except when running up steep hills where it climbed up to the top 1/4. Air temp was about 36 degrees.

Pat.
hows your exhaust, its not leaking up front is it?

I carry stuff in my boot all the time, its warm on the exhaust pipe side at the worst. the fuel tank and the rest of the car dont even get warm unless in the sun, but not much. and i've towed a car trailer fully loaded on a 40 degree day up down and around hills.

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post #3 of 7 (permalink) Old 12-29-02, 04:25 PM
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Does it only happen when towing? Could it be due to friction? Is your tank and surrounding mounts secure or rubbing on moving parts?
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post #4 of 7 (permalink) Old 12-29-02, 04:31 PM
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Sounds like a bit of a worry if that much heat is generated!
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post #5 of 7 (permalink) Old 12-29-02, 04:44 PM Thread Starter
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The exhaust is a cat back 2.5 inch system with a single muffler mounted just forward of the rear axle. It is only about 8 months old but the muffler (a Lukey I think) is looking a little sus around the seams. It doesnt seem to leak though. I checked and the pipe is clear of the tank / body as well.

I will check the towbar mounts, although I am fairly sure it is all secure - it is a good point.

I think from memory I have noticed it getting hot before but it was some time ago. I only noticed it yesterday when I went to get the jockey wheel from the underfloor compartment.

Guess it could also be a failing diff, although there isnt a direct path for heat transfer.

Admitedly I had given it a fairly hard time, cruising 200km at 100kph+ with an 1100kg ski boat, 2 adults and 3 kids and a bunch of luggage.

Time to by an F truck me thinks.

Pat.
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post #6 of 7 (permalink) Old 12-29-02, 10:00 PM
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When the tank is hot have you tried opening the fuel cap? Perhaps there is a massive build up of pressure?

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post #7 of 7 (permalink) Old 12-30-02, 07:10 PM
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could be your cat has shit itself and all the hot lava stuff is blowing back into the muffler system and bLocking it up ????
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