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R32 Fuel Problems, Running Badly

GTAHH

By GTAHH,
in General Maintenance

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GTAHH

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G'day,

My mate has a RB20 '92 gtst. Firstly, mods, front mount, bleed valve (running standard boost at the moment), turbo back.

Basically he's skyline has the standard skyline problem of stalling, but this one is different. He has changed the timing belt and water pump recently and since then the car is running badly, i.e struggling to start, lacking power. He also tells me that he removed the pump assembly from the fuel tank becuase he needed to check why he's fuel gauge wasn't working, he did nothing, took it out, checked resistance in the sender and put it back in. Then some reason the fuel gauge started working and the car is lacking response.

When it's first started no matter hot or cold, it runs like a dog for say 4 mins. I have swapped the airflow over with mine and it still does it, and he has a new 02 sensor. Sometimes it runs bad like it's in limp home mode, backfiring and carring on, so I thought maybe its overfueling or something fuel related

Thought it has to be something to do with him taking the pump out or something, but the thing is, disconnect the fuse and the pump, run the car, till stalls, keep turning for 30secs. Remove a hose of the pump and it is pouring out, and I mean pouring, alot more than usually happens and its coming out of the tank side not the hose going to the engine. Put it back on and took the other off, same thing, tried both off, same thing. It's basically like the pump is on a little and it keeps coming. It's on just under half tank too.

Would this be pointing to something wrong down that end? Pump? Or maybe the regulator is dead? It's just strange it happens after he did something. What could it be as I can't get it out with petrol pouring all over the shop, something to do with the new water pump and belt?

Cheers help out please

And sorry for the story, any help is sensational

Edited by GTAHH
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