- Joined
- May 14, 2018
- Messages
- 1,802
- Reaction score
- 1,111
- Points
- 113
- Location
- Western Mass.
- Vehicle Year
- 1994
- Make / Model
- Ford/Ranger XLT
- Engine Type
- 3.0 V6
- Transmission
- Manual
- 2WD / 4WD
- 2WD
- Tire Size
- 225/70/R15
- My credo
- If it's not broken Don't Fix It!
I have read the "How To" on vacuum but it does not mention what the vacuum gauge will read and do if there is a restriction in the exhaust, like a plugged cat. What should I be looking for to tell if I have an issue with exhaust restriction?
current test results:
Idle: 18 Hg but fluctuates 1 Hg over and under, Not rapidly so I don't believe there is an issue there.
Throttle blip: starts at 18 Hg drops to 0-1 Hg swings up to 23-24 Hg then goes to back to 18 Hg quickly. According to the How To this is fine also. Add in the compression tests I know the motor is physically fine internally.
The purpose of all the testing is I'm getting a drive train vibration under heavy loads, kinda acts like a miss but it isn't missing. My instinct says injectors causing a week cylinder but I want to be sure it isn't something else first. Any help and advice you may have is greatly appreciated, Thank you.
current test results:
Idle: 18 Hg but fluctuates 1 Hg over and under, Not rapidly so I don't believe there is an issue there.
Throttle blip: starts at 18 Hg drops to 0-1 Hg swings up to 23-24 Hg then goes to back to 18 Hg quickly. According to the How To this is fine also. Add in the compression tests I know the motor is physically fine internally.
The purpose of all the testing is I'm getting a drive train vibration under heavy loads, kinda acts like a miss but it isn't missing. My instinct says injectors causing a week cylinder but I want to be sure it isn't something else first. Any help and advice you may have is greatly appreciated, Thank you.