https://honda-tech.com/zerothread?id=255191


Just got back from my vacation, and I WILL fix this damn CRX...

I've pinpointed why my car won't start... Bought an adjustable FPR an guage, adn discovered I have 4 psi of fuel pressure. I prime the pump 8 or 9 times and I get about 15 psi of gas, just enough to start the car for a second, and then it dies. This is my 2nd Holley fuel pump.

I'm thinking there are two things it could be:

1. bad fuel pump AGAIN...

or

2. Blocked Fuel lines.

How do I go about checking for bad fuel lines on the CRX?? how feasible is it to just replace all the lines with stainless steel, or how much do new stock ones usually cost? anyone had this problem on their ED??

TIA!

 

if u ask me,..
sounds like the fuel pump its bad again... more likely that pump got either burn or Fu#$%^ by use.... other than a cloggeed line.....

 

really? It's pretty much brand new too... though it was making funny noises earlier... hmm.

 

bump...

anyone else??

 

Is your car Carburated? if so fuel pressure will be that low, if its Injected, then it can be many things...Where are you measuring the fuel pressure from?

Zee

 

He has an '89 CRX with a Y8... it's fuel injected.

Here's what you do: Unplug the wiring harness from the pump and check voltage (with the ignition on). If you're getting 12V, you're good. If not... well... start working your way up towards the battery to find the problem.

If the voltage is good, unplug the hose from the pump and have someone watch that end while you blow on the other end. This is to check if there's a blockage. I seriously doubt there is one, though because the filters on the pumps are so fine, they'd clog rather than letting some chunk go through into the line.

 

oh no... it's fuel injected. It's an '89
I'm measuring fuel pressure right at the fuel filter. I have a B+M guage hooked up to it right now... I realize that carburated cars only need 4-5 psi, but I'm pretty sure mine needs at least 38.

 

Thanks for the help F=WT! I already tested for voltage and it's good. When you say "unplug the hose from the pump" You're talking about the main steel fuel line, right? The reason I think there may be a block is because when I installed the fuel tank, and connected the main line, there was all kinds of gunky crap on top of the fuel pump housing, and I may have picked some up when attaching the line. That is just a maybe though. I'll try your suggestion this afternoon and let you know!

 

Yes. Sorry for the confusion.

Ohhh... Hm. Well, yeah, there may be a blockage then! And the reason you're blowing from the engine side is to force the blockage out the way it came. Use a compressor if you have to... Good luck!

 

Well, I blew some compressed air throught the feed line, and it blew out quite rapidly, so I don't think it's a blockage in the line. However, we tried pinching the return line as well, and it didn't help, so I don't think it's a regulator problem. tried pulling the fuel line and putting in a gatorade bottle to see if it would spray gas, but it only dripped (with some sporadic blasts) when I tried to prime it. ??? There is no gas in the cylinders when we start it, so it couldn't be a leaky injector. Does this point to the pump? or saomething else? Help!

 

Does the pump work for sure?

 

well... no, it doesn't work "for sure"... what we did was disconnect the feed line and prime it into a bottle, and it would drip, then spray, then drip. Not evenly. I will probably pick up another pump tomorrow, and for now I'm going to redo the wiring, because I ghetto spliced the connectors together. We tested the other wires for continuity, and it checked out good.

 

Update:

I just talked to a holley technician, and he said it sounds like I "have no return line" and the pump is just working against itself, which would burn it out. The pump is actually for a 94+ Integra, but it is the same as my CRX one, right? I mean, it is a little smaller, and the connectors are different, but it's the same thing, isn't it?