Longer to crank than normal
Thread Starter
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Tuned
Joined: Aug 2002
Posts: 476
Likes: 1
From: Greatest state on earth
Longer to crank than normal
For the last month, since my `86 F250 has been on the road running, the motor has fired up instantly soon as starter cranked over. Absolutely no delay at all starting even without waiting for glow plugs to heat.
I drove about 60 miles to destination and everything was as normal. About 2 hours later the starter spun over like a gas motor with out any spark. For about 5 seconds and I stopped. Then tried again with same results. I pressed pedal down a little and motor finally fired up. It is now doing the same thing every time.
Any idea of what may have changed?
I got stuck in a heavy down pour on the way back, so not able to pop hood to look things over yet.
I drove about 60 miles to destination and everything was as normal. About 2 hours later the starter spun over like a gas motor with out any spark. For about 5 seconds and I stopped. Then tried again with same results. I pressed pedal down a little and motor finally fired up. It is now doing the same thing every time.
Any idea of what may have changed?
I got stuck in a heavy down pour on the way back, so not able to pop hood to look things over yet.
Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
Take it out for a run to get it good and warm (drive it to work), when you get back to the house (or work), shut it off, wait 5 minutes and restart ... Does it restart quickly?
Then shut it off and go about your business for the day, when you come back does it start quickly?
-Enjoy
fh : )_~
Then shut it off and go about your business for the day, when you come back does it start quickly?
-Enjoy
fh : )_~
Thread Starter
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Tuned
Joined: Aug 2002
Posts: 476
Likes: 1
From: Greatest state on earth
No difference starting either sitting 5 minutes five hours or over night. Consistently starting as stated above. No instant starts anymore. I just dont want to get stranded if something has changed.
Postmaster
Joined: Dec 2011
Posts: 3,860
Likes: 7
If you depress the pedal when cranking, does it start quickly?
Alternately, hm, I wonder about the low pressure pump; If it's not making pressure(or much of it), but you don't have leaks in the system, the IP might be having to build pressure via it's own internal transfer pump. Just a thought, because I've never seen this.
Alternately, hm, I wonder about the low pressure pump; If it's not making pressure(or much of it), but you don't have leaks in the system, the IP might be having to build pressure via it's own internal transfer pump. Just a thought, because I've never seen this.
Thread Starter
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Tuned
Joined: Aug 2002
Posts: 476
Likes: 1
From: Greatest state on earth
Nothing changed at all except not starting immediately when cranking. When I depress pedal it will hit then fire up.
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Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
Not sure what you mean by "hit then fire" ...
However, Having to depress the pedal is the only indication you've given that indicates an issue ... That would be failing IP, However it is not showing the other typical signs of a failing IP. Easy starts cold, doesn't start hot!
How old are the Injectors and IP?
You state "Without waiting for the Glow Plugs" ... Well if they are all in proper working order and it's not cold a few seconds is all it takes, but if a couple plugs have died it will take longer to start!
Are you now waiting for the WTS to go off?
When was the last time the Glow Plugs were checked?
-Enjoy
fh : )_~
However, Having to depress the pedal is the only indication you've given that indicates an issue ... That would be failing IP, However it is not showing the other typical signs of a failing IP. Easy starts cold, doesn't start hot!
How old are the Injectors and IP?
You state "Without waiting for the Glow Plugs" ... Well if they are all in proper working order and it's not cold a few seconds is all it takes, but if a couple plugs have died it will take longer to start!
Are you now waiting for the WTS to go off?
When was the last time the Glow Plugs were checked?
-Enjoy
fh : )_~
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Thread Starter
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Tuned
Joined: Aug 2002
Posts: 476
Likes: 1
From: Greatest state on earth
Nothing else has changed...yet. Does not matter is WTS light goes out or I try when cold. I now have to depress pedal for motor to fire up. Not immediate like before this started. It now takes a moment to fire up only after depressing pedal.
IP and injectors are original. Glow plugs are new.
IP and injectors are original. Glow plugs are new.
Thread Starter
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Tuned
Joined: Aug 2002
Posts: 476
Likes: 1
From: Greatest state on earth
Nothing else has changed...yet. Does not matter is WTS light goes out or I try when cold. I now have to depress pedal for motor to fire up. Not immediate like before this started. It now takes a moment to fire up only after depressing pedal.
IP and injectors are original. Glow plugs are new.
IP and injectors are original. Glow plugs are new.
I finally got a chance to look everything over. Nothing seemed out of the ordinary. I had not done an oil and fuel filter change yet, until the truck had a few miles put on it. I wanted to make sure there were no underlying problems that got missed.
Changed out the fuel filter and drove it around. Now its back to normal.
One thing I did notice. It is a little quieter than before. I can go to a drive thru for a window burger now without having to kill the truck to place my order.
Postmaster
Joined: Dec 2011
Posts: 3,860
Likes: 7
That makes sense, actually- Housing pressure retards the timing, and if it's starving for fuel one way or another, and the housing pressure isn't staying at the regulated 5-ish PSI, it would run more advanced, like when the cold advance is on.
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