Which fuel pressure tester ?
Thread Starter
Racer
Joined: Oct 2007
Posts: 442
Likes: 15
From: FL
Which fuel pressure tester ?
1986 C4 hard start, new fuel pump, new fuel pump relay, new battery
Trying to locate the problem and bought a fuel pressure test kit that turned out not to fit. In the manual it says "not for GM body injection" (probably TBI) and not for others like Bosch. It didn´t say so on AMZN. Seems as if the brass fitting to the Schrader valve does not push down on the valve needle. I tried several brass connectors that came in the box and all the same. When I push in the valve needle with a screwdriver at idle, fuel spills out, but not under a lot of pressure.
RA sells this fuel pressure tester, would it work for the C4s?
https://www.rockauto.com/en/moreinfo...=1001027&jsn=6
Trying to locate the problem and bought a fuel pressure test kit that turned out not to fit. In the manual it says "not for GM body injection" (probably TBI) and not for others like Bosch. It didn´t say so on AMZN. Seems as if the brass fitting to the Schrader valve does not push down on the valve needle. I tried several brass connectors that came in the box and all the same. When I push in the valve needle with a screwdriver at idle, fuel spills out, but not under a lot of pressure.
RA sells this fuel pressure tester, would it work for the C4s?
https://www.rockauto.com/en/moreinfo...=1001027&jsn=6
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
One of your 'local' auto parts stores should have one that you can borrow with a deposit. Many have 'new' that they will supply you and if you like it your deposit will likely cover the purchase. If you don't like the use of/or anything different that you might prefer, return it and make a purchase decision based on what you didn't like!
Safety Car
Joined: Mar 2017
Posts: 4,202
Likes: 1,323
From: LeClaire Iowa
One of your 'local' auto parts stores should have one that you can borrow with a deposit. Many have 'new' that they will supply you and if you like it your deposit will likely cover the purchase. If you don't like the use of/or anything different that you might prefer, return it and make a purchase decision based on what you didn't like!
Thread Starter
Racer
Joined: Oct 2007
Posts: 442
Likes: 15
From: FL
I use performance tool # W80595 it fits my 87 schrader. It is a straight fitting and is a little bit of a pain to screw on with the schrader so close to / under the plenum.
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https://www.amazon.com/Performance-T...d9c990d49&th=1
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https://www.amazon.com/Performance-T...d9c990d49&th=1
