01 SL turns over many times before start
#11
07-16-2010 | 08:11 AM
Senior Member
Joined: Mar 2010
Posts: 1,912
From: Peoria AZ
I've been a shade tree mechanic for a time. Never really felt a fuel pressure gauge was important enough to buy, untill fuel injection. They are not cheap, but answer a lot of questions quick and up front. Also I found that I don't spend a lot of money unless I need to in order repair something. So it paid for itself, almost the first time I used it. Well, 2nd time, the first time I spent a ton having some one else do it which would have paid for it then 'cause I had a fuel pump going out and did not know it.
#14
07-17-2010 | 09:18 AM
Senior Member
Joined: Mar 2010
Posts: 1,912
From: Peoria AZ
Using a fuel pressure gauge tells you whether you have fuel pressure or not.
1. Have had fuel pumps that were intermittent.
2. Have had fuel pick up problems
3. Have had regulator problems.
4. Depending on the car, fuel pump will be shut off after various types of failures and the car does not start with in a certain period of time.
Determining if you have fuel pressure or not up front avoids spending money on parts you don't need, usually expensive caused by guessing what might be keeping it from starting.
Determing if you have and when you have fuel pressure helps determine where to look if the problem actually is caused by fuel delivery.
One car failed to start due to lack of oil pressure. Sensor failed, computor sensed lack of oil pressure, never turned on pump, or turned it back off when oil pressure never built up. Car never started. Fuel pressure gauge determined what was going on with pressure, reading the manual on how it worked led to problem.
Saved a lot of money that way rather than throwing parts by guessing at cars that don't run.
But that is the way I function, a guage paid for itself, the first time I used it.
1. Have had fuel pumps that were intermittent.
2. Have had fuel pick up problems
3. Have had regulator problems.
4. Depending on the car, fuel pump will be shut off after various types of failures and the car does not start with in a certain period of time.
Determining if you have fuel pressure or not up front avoids spending money on parts you don't need, usually expensive caused by guessing what might be keeping it from starting.
Determing if you have and when you have fuel pressure helps determine where to look if the problem actually is caused by fuel delivery.
One car failed to start due to lack of oil pressure. Sensor failed, computor sensed lack of oil pressure, never turned on pump, or turned it back off when oil pressure never built up. Car never started. Fuel pressure gauge determined what was going on with pressure, reading the manual on how it worked led to problem.
Saved a lot of money that way rather than throwing parts by guessing at cars that don't run.
But that is the way I function, a guage paid for itself, the first time I used it.
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