Hard Starting

[Dieselman359]

Its been getting worse and worse over time. It started off by taking longer to get started like dads' '03, but now it won't start when its hot. When it is cold, it doesn't start instantly like we are all familiar with, but it will start. After it has been run, it cranks and cranks for as long as you'd like. Funny thing is, the other day when it wouldn't start, I let it cool off and kept trying, finally I gave up called dad to come and get me. Just for the heck of it I tried to pop-start it and it fired right up.

I've figured that its air getting in somewhere, so I made sure that all my lines were tight, I also took off my fuel pressure sending unit to eliminate the possibility of any problems with the rubber hose that feeds it. I also changed the fuel filter to make sure that it wasn't restrictive at all. Fuel pressure has been a constant 12-14psi. I've been second guessing myself and my installation of the 366 spring, which brings my to my second and possibly related problem. When you let off of the clutch, it is weak. Not really being able to type exactly what is happening I'll put it to you like this; usually you can slip your foot off of the clutch and the truck would go. Right now, if you aren't careful, it will stall, even the exhaust brake bogs it down. It seems to me like something is wrong with the govenor, which leads me to believe that I did something wrong with the 366 spring install.

Who would of ever thought that an old worn-out farm truck with 311K would be more reliable than a 2wd cream-puff. :-laf Tell Jermey that one Philip.



Oh, and by the way, once you do get the truck running, it runs as strong as it ever has. I hauled a tractor 3 weekends ago, the biggest hills that I came to couldn't stop it. Thanks everyone.

 

[Philip]

Tell Jermey that one Philip.

I will. We were just talking about old browny yesterday. We were in Indy with a load of hay. We had a couple of places we could have used the extra smoke it puts out. We came across a couple of dumbies that could have used it. :-laf :-laf



You normaly see no start problems due to a air leak when the truck has set for a while not on hot restarts. Pull the pluger out from under the solniod and see if the tip is gone or there is metal in there. While you have to sol off. Leave the tip out and see if the start problem goes away. DaleDoze had some problem with the tips on his truck.





Chris do you need a steering column gage pod? I pulled the one off my truck.

 

[bgilbert]

I agree with Philip, eliminate the plunger in the shutdown solenoid then see if anything changes. Unfortunately from what I've read, all the 'won't start when hot' issues turn to worn out or needing repair injection pump.



Hopefully it's just the shutdown plunger not popping up all the way when cold, although enough to allow fuel past to start, but then once warmed up, it doesn't open enough at all... ... .



Although it's been two days, I'm sure he's done solved this issue, or swapped injector pumps between the trucks:-laf.

 

[PToombs]

Chris do you need a steering column gage pod? I pulled the one off my truck.

You still tryin' to get rid of that? I remember you were tryin' to pawn it off at SOP! Man! :-laf



By the way; Hi Chris! Try the plunger thing!

 

[Dieselman359]

Shutoff solenoid

Thanks for the thoughts fellas, I kinda ruled out the shutoff solenoid when I pop-started it the other day, but I'll check it out and let you know.



Yea Bill, thats kinda what I'm afraid of, needing pump repair. No, the two trucks are about 70 miles apart, so there is no pump-swaping going on. The pump only has about 50K on it since its "rebuild. " Maybe they didn't do the $600 worth of work that they charged for, or maybe it is those two big springs that I keep hearing about. Or maybe it could be a million other things.



Thanks for the offer Philip, but I've got one Jermeys old truck, and I'm not wiring up anymore gauges in this one.

 

[MMiller]

I would think that if the spring was not properly installed it would either not run at all, or else it would run away. I agree on pulling the shutoff solenoid. The shut off lever is not partially moved to the shutoff direction is it? If it was leaking air into the lines, it would be more of a problem when shut off for extended periods of time.



The no power off idle has me fooled a little. Did you back the fuel screw out? I remember the first time I messed with my fuel screw, I went the wrong way and the truck would not run.



Just remember that the pump goes to full fuel on startup, if it does not have full fuel during cranking, it won't start.



I think its your exhaust brake and gear vendors causing the problem, I think you should send them to me for proper disposal!



Michael

 

[Dieselman359]

Is this good?

After I pulled the shutoff solenoid and removed the plunger I found these little chunks of what I thought was rubber. The truck was still weak at idle and hard to start.



Then today I found that the little bit of silicone or whatever it is around the throttle shaft bushing is comming apart and is probably in every nook-and-crany of the pump. Also the bolt in the in the picture had some of this ground-up-degraded-crap inside it.



Suggestions?, am I gonna have to take this thing off and upgrade?

 

[Dieselman359]

How much more do you think is in there?

 

[dpuckett]

Looks like when they epoxied it, it wasnt surgically clean and dry. I'd say it is time to rebuild. Check your PM box tomorrow.



DP

 

[PToombs]

I wouldn't think that stuff should be near the inlet. That epoxy, if it is inside, should settle to the bottom or go out and plug the outlet orifice. I bet you have crap coming in to the pump, bad o-ring at filter, or something.