88yotakid

i have checked for spark and i have spark,took off the air breather and have squirted gas into the manifold and it fires up,took out EFI relay and tested and it is fine.
what else can stop my fuel pump from not pumping? and how can i test my fuel pump or the wires to my fuel pump?

neoworm0

There are a lot of things that can affect fuel delivery. Got gas in it? Sounds stupid but it happens. Start with the simple stuff like filter. Check your fuel pressure. Online search should tell you how to do it.

toytech76

On your diag box under the hood take a jumper wire and jump B+ to FP. Turn your ignition to on. Go under the hood and crack open the cold start injector. If your pump is ok then gas with gush out of the injector, if not then you know your pump is probably bad

88yotakid

well, we tried the jumper and it wouldnt start, but now we have no spark. checked all the fuses and they seem to be fine.
gotta love owning a toyota

88yotadad

I was testing fuses and relays to try and be sure it was the fuel pump. Then we tried the jumper the wire from B+ to FP. Now we have no spark.
I could not remove 1 fuse it is a 80a fuse.
The fuse map is wore off the fuse box under the hood so no idea what this fuse doses. If some has a pic of the fuse map that would be great.
Where should I start to look for the no spark problem?
Roger

toytech76

Its probably your am1 fuse or you can call it a pal fuse

88yotadad

Where is this fuse located? Under the hood or in the fuse panel behind drivers kick panel. I'm headed out to the shop with the Hayes book to look for the fuse.
Thanks for the help Roger.

zachb55

well the jumper idea was something to try with the cold start valve out of the intake manifold and not actually trying to start the engine, if gas is coming out of it with the key in the on position, then your pump is working, doesn't mean that its working as well as it should though. having those two terminals jumped probably disables the ignition and thats why you have no spark.

88yotadad

Without the jumper wires on there is no spark now. I'm trying to solve the no spark problem before I go ahead with the fuel pump.
Roger

88yotadad

I unbolted the 80a fuse and tested and it is fine. I figured it would be OK as the motor cranks but no spark.

88yotadad

Bump

Anymore ideas anyone.