Quote:
Originally Posted by Graham
First of all, the carquest pump maybe OK for a test, but not long term.
Check this thread out
D-jet fuel pump acting up
Fuel enters the fuel rails at the front and the flows down both sides. The flows come together again at the fuel pressure regulator - It has two inlets and one outlet. this one outlet connects to the fuel damper and from there fuel flows back to the tank. From your post, it sounded like you may have thought the fuel flowed the other way? I have never tried it, but I doubt you could get reverse flow through the regulator.
Maybe try soaking the pump, regulator and damper in carb cleaner or similar. Try blowing through them the proper way. Dismantle and have a look at the pump internals and check that there is resistance across the terminals. Try hooking 12v to pump with head off and see if the spindle rotates. You may be able to bring the pump back to life!
To test the pump, reinstall it and run the discharge line into a container. Pressure should be about 30 psig and low 2L/min.
You will probably need to get the injectors cleaned - there are places that will do it for under $20/injector. But for a start, try soaking them in carb cleaner or an injector cleaner.
Have fun  |
Hey Graham
Yes, I had it ass-backwards. Grrr... I was lead astray by the fact the the return line (I know that now thanks to you) was piped to the fuel pump. I asume the pump should be attached to the outlet on the bottom of the tank and the return line goes into the tank up at the top? Just want to make sure the last "experimenter" didn't get it all wrong.
Anyway - I was concerned that the CarQuest pump was not going to cut it long term, so I forked over the $202 for the Airtex pump today. I'll have it in the morning. I've pulled and cleaned the fuel rails, injectors, etc. Cut new FI line sections and picked up some new clamps. I'll assemble it all tomorrow and give it a try.
Someone had attempted to rework the old pump as well at some point and it is ragged. Beyond saving, but thanks for the advice.
To be continued...