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So I've installed my new to me starter about half the size (old one was Mitsubishi new one is a Bosch ) anyways I thought I had and air issue in my fuel lines but after plugging in the block heater for a couple hours it flashed right up ? Any suggestions ? I did crank it over for about 30 seconds 3 or 4 different times then battery got weak (it's been sitting for months) then plugged the block heater in, put batteries on charge, it sat for about 2 hours then it fired up like first second of the first crank
I'm going to assume you are questioning this on a 92 F-250.
You can help those that answer questions by adding your vehicle to your signature ...
Well it could still be getting air in the system ... 3 or 4 times for 30 seconds is more than enough to pickup fuel from the tanks on a empty system.
And technically it should be 20 seconds cranking, 2 minute rest. Don't wanna burn up that new starter.
However, first I would look into the Glow Plugs.
When you first turn the key on how long does the WTS light come on?
Have you tested that the Glow Plugs are getting power?
So My truck sat for another week and today I plugged the block heater in and keyed it over "wait to start" then it cranked for about 4 seconds and fired right up, so this leads me to believe that There's no air in the lines like I once thought and that's it's. A a glow plug and or glow plug relay issue... What's your thoughts ? ... Thanks in advance
How long does the Wait To Start (WTS) light stay on when you first turn the key on?
Do you hear the Glow Plug Relay click when turning on the Key?
Test for 12V+ on Ignition Power with key on.
Test for 12V+ on Input from batteries
Connect one end of a test light to To Glow Plugs the other end to ground, place it so it can be seen when turning on the key, turn on key, does it light up?
Test the Glow Plugs.
How to Test Light Test the Glow Plugs:
Unplug the Glow Plug.
Attach one end of a test light to 12v+.
Touch the other end to the terminal on the end of the Glow Plug (where you unplugged the harness)
Does it light up?
Yes, Chances are it's good.
No, Replace with
83-86 - Motorcraft/Beru ZD1A.
87-94 - Motorcraft/Beru ZD9.
Reconnect the Glow Plug.
Repeat for all Glow Plugs.
This test is susceptible to miss diagnoses and should only be used for a quick reference.
To do a more positive test, use a volt/ohm meter and test the ohms between the terminal and base.
They should have .5 to 1 Ohm resistance. (Technically, .1 to 1)
They should all be close to the same.
To do an even more positive test, ask How to do a Positive Burn Test of Glow Plugs.
When you turn the key on it should click one time ... after 10 to 15 seconds it should click 3 or 4 times then stop.
If it goes click click click when you first turn the key on you have Glow Plug or Glow Plug harness issues.
You need to test the Glow Plugs ...
If you do not know for sure whether it has Motorcraft/Beru ZD9 Glow Plugs or not, then you need to pull them and find out, if they are not Motorcraft/Beru ZD9 Glow Plugs, throw them as far into the river/lake as you possible can and get some Motorcraft/Beru ZD9's before you have to pull the heads to get the exploded tips out of the cylinders.
Keep the test light hooked to the "To Glow Plugs" location and ground, remove the white wire from the Relay. (The "Controlled ground from GPC".)
Turn on key.
Then using a jumper wire, connect one end to ground, then touch the Relay terminal where you removed the white wire from with the other end of the jumper wire ...
Hold for NO MORE than 10 seconds, does the test light light up?
I did it for 8 seconds and the test light didn't light up, does that indicate a bad relay? I purchased one today in anticipation of having to change it
