Need help or ideas!
The trick to getting it started is to go through the WTS light 3 to 4 times before it will crank up?????

FYI My Batt is good and all new conections on batt pluse on starter!
Any ideas?
Jason
I also agree you should check for 12V behind the starter relay the first time you turn the key.
I am going to say there is corrosion inside the passenger side battery terminal where the wires connect to the clamp.
The large draw from heating the glow plugs causes the connectors to expand resulting in a better connection.
If you would like to test this, after say two glow plug heat cycles, see if the passenger side positive battery clamp is hot.
Do that cautiously, it may be hot enough to burn your fingers.
When you have early stages of corrosion in a connector it causes heat when you try to draw a lage amount of current through the connection.
As the corrosion gets worse, it finally just stops working at all.
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When I discovered the source of the problem when mine was acting like that at a slightly more advance stage I was amazed the engine had started for the last year or so.
Fired the truck up normally, drove a mile to a friends house.
Shut the engine off and a little later it would not start at all.
I had been having problems like you describe for about 7 or 8 months, cleaned everything I could see.
Also the lower voltage being delivered to the starter wound up costing me one of them as well, so I still had the same problem even with a new starter.
When I finally got it started and home I was at wit's end with it.
So as I looked at the battery cable system, everything ties together in the passenger side positive clamp.
So I took a 4" grinder with a cut off wheel to the positive clamp and cut it open.
On my 86, the cable to the starter is 3/0 cable.
The cable from the drivers side battery to the passenger side clamp is 2/0 cable.
The wire from the starter solenoid to the passenger side clamp was a #4 wire.
The wire from the starter solenoid is what ties the cab power, alternator and glow plug power together and gets it to the battery system at the passenger side positive battery clamp.
The crimp on the battery cable clamp was all that tied everything together.
When I could see the conductors, they were so corroded I really don't see how they were conducting any electricity at all.
The 3/0 cable down to the starter had been so hot the end of the conductor was actually melted into a copper ball.
So now the problem was found, and I also had a dead truck.
So a trip to the local auto parts store and they did have a heavy duty bolt on battery clamp.
But there was no way all those big cables would go in it.
Longer bolts did let me get all of the wires in there till I could get a new cable made.
And boy did the starter crank the engine when I got it all back together, started better than it had for years.
If you are getting enough connection for the glow plugs to work somewhat and the cab interior lights to come on you do have a connection that may show little or no resistance when the draw is low.
The glow plugs draw almost 200 amps when they heat.
The starter will draw right at 300 amps when you are cranking the engine.
When you start trying to draw that much current through a connection that is a less than perfect connection, you will have problems with voltage drop that may look like nothing with a 10 or 15 amp load and even less than that with an ohm meter on it.
Master electrician for 15 years.
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Manual?
If so the clutch safety switch could be out of adjustment.
By the fourth attempt to get it started you are frustrated enough to slam the pedal down hard enough for it to make connection.



