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Pictures of 82 380 SL fuel return line

7805 Views 16 Replies 6 Participants Last post by  Chris8 S
Did a search and came up empty. I have a 380 that has been sitting for a couple of years and does not want to stay running. At first it would run for a few miles then start sputering and very hard to keep it running.
What i have done.
pulled tank and cleaned
install new strainer in bottom of tank
fuel pump replaced by previous owner I can hear it running and did a pressure test of 100psi
replaced fuel filter. Alot of rust came out.

After doing these things it starts rough and idles then the pump starts moaning and it starts to die.

I know that 100 is too high so I am thinking the return line may be clogged. I dont know which line is the fuel line. POS Haynes manual is very vague.
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All those lines are available from the dealer. About $60 for each. Recently replaced mine because they were getting too old for my comfort.

That said, you are pursuing an extremely unlikely cause. There are dozens of other, far more likely, causes -- especially if your fuel was contaminated. I highly recommend that you perform the fuel system pressure diagnostic testing outlined in the FSM. Get a set of K-Jet gauges. The $100 you spend for a decent gauge set will be repaid many times.
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