- Joined
- May 29, 2018
- Messages
- 429
- Reaction score
- 232
- Points
- 43
- Vehicle Year
- 1991
- Make / Model
- Ranger supercab
- Engine Type
- 4.0 V6
- Engine Size
- 4.0
- Transmission
- Manual
- 2WD / 4WD
- 4WD
- Total Lift
- Crap load
- Tire Size
- 35X12.5 (bald so I don't break parts)
- My credo
- Low range in Nova Scotia on YouTube!
Out wheeling the other night and shut off for 20 minutes or so. Went to start and it rolled over like it was flooded, caught on a couple cyl's and puttered for a minute then finally revved up but was skipping bad. Idled fine, light throttle it would rev to 4500. Stomp it and it was like shutting off the key. Half to the floor and it would skip and fart as it slowly revved up.
So, idled away (was crawling anyway) and after 5 minutes of driving it still skipped but revved better. After 15-20 minutes of crawling (1st gear idle over rocks) stabbed it and it took off, no missing. Tried again and from idle to 5000 was clean, no skipping.
Today I checked the fuel pressure and koeo it was 20-25psi. Threw on a new fuel filter it went to 30psi. Engine running or not it maxes out at 30psi.
Pulled the vacuum line off the regulator and the needle went crazy, vibrating between 25-35. Plugged it back in, steady 30.
Turned key off, holds 30psi for a while but when I check 5-10 minutes later it's a 25 or so.
Turn the key on and leave it on, the fuel pump cycles about every 3-4 seconds. Runs, pressure goes up, then off for 3-4 and then it kicks in again, continually until I shut the key off.
I heard a clicking while the key was on, separate from the relay, it was the injectors. (Why are they clicking?) Also, if I start it up, shut it off, start it up, shut it off it fires up every time. If I leave the key on and it cycles a few times, it seems to flood it. Hard start, hitting on a couple cyls after rolling over 15-20 times then starts.
So......fuel pump not putting out enough pressure/check ball not stopping it from draining back?
(Why is the injectors clicking every few seconds when the engine isn't running?)
Or something I'm overlooking?
Oh yeah, it's a '91 4.0 manual 4x4.
So, idled away (was crawling anyway) and after 5 minutes of driving it still skipped but revved better. After 15-20 minutes of crawling (1st gear idle over rocks) stabbed it and it took off, no missing. Tried again and from idle to 5000 was clean, no skipping.
Today I checked the fuel pressure and koeo it was 20-25psi. Threw on a new fuel filter it went to 30psi. Engine running or not it maxes out at 30psi.
Pulled the vacuum line off the regulator and the needle went crazy, vibrating between 25-35. Plugged it back in, steady 30.
Turned key off, holds 30psi for a while but when I check 5-10 minutes later it's a 25 or so.
Turn the key on and leave it on, the fuel pump cycles about every 3-4 seconds. Runs, pressure goes up, then off for 3-4 and then it kicks in again, continually until I shut the key off.
I heard a clicking while the key was on, separate from the relay, it was the injectors. (Why are they clicking?) Also, if I start it up, shut it off, start it up, shut it off it fires up every time. If I leave the key on and it cycles a few times, it seems to flood it. Hard start, hitting on a couple cyls after rolling over 15-20 times then starts.
So......fuel pump not putting out enough pressure/check ball not stopping it from draining back?
(Why is the injectors clicking every few seconds when the engine isn't running?)
Or something I'm overlooking?
Oh yeah, it's a '91 4.0 manual 4x4.