How do I measure fuel pressure on a 93 Corvette LT-1?
10-02-2002, 09:24 PM
#1
Race Director
Thread Starter
How do I measure fuel pressure on a 93 Corvette LT-1?
At Ed Wright they want to know my fuel pressure at idle with the vacuum line plugged.
How do I measure this?
How do I measure this?
10-02-2002, 09:49 PM
#3
Burning Brakes
Member Since: Jun 2002
Location: Duluth MN
Posts: 883
Likes: 0
Received 0 Likes
on
0 Posts
Re: How do I measure fuel pressure on a 93 Corvette LT-1? (dizwiz24)
I assume they mean the vaccum line on the pressure regulator then just pull the line and plug it with your finger..
10-02-2002, 10:12 PM
#4
Race Director
Thread Starter
Re: How do I measure fuel pressure on a 93 Corvette LT-1? (dizwiz24)
Is there are schrader valve on both fuel rails, or just one?
Also, should I start the vehicle with the fuel pressure gauge attached and screwed to the valve, or should I attach it with the engine running?
I am assuming I should start the vehicle with the fuel pressure gauge attached.
Also, should I start the vehicle with the fuel pressure gauge attached and screwed to the valve, or should I attach it with the engine running?
I am assuming I should start the vehicle with the fuel pressure gauge attached.
10-02-2002, 11:03 PM
#5
Re: How do I measure fuel pressure on a 93 Corvette LT-1? (dizwiz24)
Attach the gage with car off. There's only one schrader valve located on the passanger side of the engine. Plug the rubber vacum elbow. Unpluging the vacum from the fuel regulator simulates a WOT condition.
10-03-2002, 10:47 PM
#6
Race Director
Thread Starter
Re: How do I measure fuel pressure on a 93 Corvette LT-1? (dizwiz24)
Ok, I got it. It does do something weird though. I also didn't like having raw fuel squirt out onto a hot engine when I first attached the hose to the schrader valve
Key on engine off I see 43 psi
Engine idling it drops to 38 psi
Pull off the regulator vacuum hose and it stays at 38 psi (Weird, shouldn't it increase with the vacuum hose off and plugged)
put the vacuum hose back on and rev it and it spikes to 45 psi
Is that normal that it didn't increase with the vacuum hose off and plugged
Key on engine off I see 43 psi
Engine idling it drops to 38 psi
Pull off the regulator vacuum hose and it stays at 38 psi (Weird, shouldn't it increase with the vacuum hose off and plugged)
put the vacuum hose back on and rev it and it spikes to 45 psi
Is that normal that it didn't increase with the vacuum hose off and plugged
