Rotax3006

Yes you have to crank the engine. leave 3 or 4 injectors cracked and crank the engine. Once they show fuel squirting out tighten them down. It will usually start once you have fuel out of 3 injectors.

The pilot bearing can make quite a bit of noise as well, only when the clutch is pressed though. Make sure you change it as well mine has had 2 failures so far. Talk about a lot of work for a inexpensive part.

Yep same for me. New one seems twice as fast. Glad you are up and running.

To be fair, i went through the exact same situation. My truck would start quickly when cold but crank for a long time when hot. I think as the starter started to fail i didnt notice the cranking speed slowing down. I definitely noticed once I installed the new starter though. Mine had bad bearings, easy to spot once you bench tested it. I think the heat sink would tighten them up and cause excessive draw and slow cranking when hot. I noticed with the scanner that once the cranking speed hit 300 RPM the truck would start. It just took longer to build pressure with the initial slower cranking. The VPs on these trucks are so fragile that its the go to anytime you have starting issues.

Any updates?

So if I understand you correctly, truck is starting fine now? Hope that fixed your problem. Enjoy the pack trip.

The good news is that those are not the VP death codes, of course that doesn't mean much. It does not sound like a fuel leak to me. It would have to be a major leak for a hard start immediately after shut off. Here is pretty good link to hot start trouble shooting https://www.bluechipdiesel.com/troubleshooting-quick-reference. This is what I used along with the advice on here. They definitely emphasize making sure the starting system is 100%. Good luck it can be frustrating.

I went through some hot hard start issues with my truck recently. I ended up replacing the battery and starter. When it was cold it would crank over great and fire right up. As everything got hot it wouldn't crank fast enough to build pressure and took longer to start. It seemed like it was cranking fast enough at least until i put the new stuff on. I would check the batteries and starter before you throw a VP at it, doesn't cost anything. My starter actually passed the load tests at Orileys but you could hear that the bearings had failed.

Thanks for the tip. Appreciate all the advice.

Yes the truck seem to be performing correctly now. It always ran fine once it started just cranked longer than normal. It starts cold or hot now. Had trouble when it was hot before. Fires right off now. Not a daily driver but I drove it for three days this week to make sure. Bill

No it was a Napa reman from about 15 years ago. It actually lasted longer than the factory starter. Core charge was $40 anyway.

Just got the long cranking all figured out. Turned out to be a combination of a bad battery and a bad starter. It fires right up now. Took the starter off and took it in to have checked. It passed all the load tests but sounded like death doing it. Replaced it and sounds night and day different cranking. Now off to address that lift pump before im back here asking the same questions.

I agree with you that oversized tires do make a big difference on drivetrain wear. I have only had the nut fail once and that was on the original transmission with 175000 miles. Once i put the updated shaft in the nut itself never failed. I stripped a couple teeth off the gear last summer. i got lucky and they just fell into the bottom without damaging anything. The guys at inland truck said they see that a lot. You might be on to something with the undersized tires. Steven the guys over at torque king can probably answer any questions you might have. Its a local shop for me so I always go and pick their brains they are pretty helpful. They seem to be the NV 4500 experts, probably had one of the best mainshaft fix kits ever. Not enough demand now so they quit making them.

I just put on of these in my truck last summer and i believe mine was the same way. I think the outer washer is to keep the inner pieces from falling out if it gets loose. It still keeps the gear from backing off because of the slotted shaft that the inner pieces fit into.

Thanks again guys. I know I need a better lift pump, will probably get one sooner than later Covid 19 and kids are hard on the truck budget. If this vp failed I believe it had to be a faulty pump rebuild. I know that fuel pressure was never under 12 psi for any extended period. Even with low pressure 5000 miles is horrible. Had it made 50000 I wouldn’t be too upset. My intention with the Hotwire test was to eliminate the electronic failure. That would narrow it down to mechanical issue with the pump. I don’t know if that eliminates the pump electronics though. I guess it doesn’t matter since the electronic failure requires a new pump too.

I know you are probably right, I just hate to have to pull the trigger on another pump especially with how little this one has been used. Probably going to go the DAP route this time. I got injectors form them a while back and liked the service. Although Orilleys is offering a pump with a lifetime warranty......they dont know us 2nd gen guys very well !!!. Would a hotwire test would eliminate the sensors, ecm. ect?

I did some more testing last night. Here is what i tried. 1. Truck set for 8 hours at work and still started hard when I left. 2. The truck drops to 10.7 volts while cranking, That seems ok. Im going to pull the starter and have it checked next. Truck seems to be cranking slow still although my scanner states its cranking at 300 RPM. 3. Swapped the horn relay and the fuel relay. No change 4. Unplugged the lift pump. No change 5. Poured water on pump. This seemed to help slightly at first, however after a couple hours I went to a meeting about a mile from my house. It started hard when i left for meeting and after 2 hours stetting in the shade. VP felt cool to the touch both times. The thing that leads me away from the VP is that this started doing it almost instantly. It was fine last week then almost overnight it happened. It doesnt have any codes and runs really well once it starts. Im at a loss on this one. Thinking that maybe I have a cam/crank sensor going bad? Possibly a bad PCM/ECM? As far as I can tell industrial injection only uses new electronics, the pump had a one year warranty. I have always had a fuel pressure gauge on this truck, I am running the stock lift pump. Pressure on the gauge has always read about 15 at idle dropping to 13-14 area while driving. Might dip to 10-11 on really hot rod driving. The last VP went 256000 miles with the same setup so i feel confident that its getting enough fuel.

Well i did find that one of the batteries was bad so i replaced them. That did help with the startup in the morning. Still doesn't want to start when its warmed up. It will start but has a pretty long cranking time 5-8 seconds probably. Everything i have read is pointing to the VP being bad. Its hard to believe since it has less than 5000 miles on it. It was an industrial injection reman. I see some posts about unplugging the LP during cranking. I haven't tried that yet. Truck seems to run fine once it starts. No miss or noticeable smoke. I originally thought i might have a fuel leak letting air in. I shut it off at work today and immediately tried starting it, same story cranked for 10 sec. I dont believe that a air leak would cause it to bleed off that quickly without leaking while it was running. Anybody have any other ideas?

Hi guys, I'm having a hard starting issue with my 99 24v manual. I noticed today that when i first started it it cranked for a few extra revolutions, maybe 5 seconds. I thought the fuel had probably leaked off since its been sitting for about a week. Went to the dentist left it set for about an hour, same issue. Had the same issue at work after setting for 4 hours. Tonight when I got home I immediately tried restarting the truck. It did the same thing, cranked for about 5-8 seconds then started. Here are my thoughts: 1). It seems to be cranking slower than normal. This leads me to believe that it could be bad batteries/starter not spinning the engine fast enough. Is that possible? 2). Could I have a fuel/air leak that bad that wouldn't leak fuel. It would have to be pretty bad to drain off that fast. 3). Possible sensor needs replacing? Notes: Truck has new VP. Replaced at Christmas 2 years ago. Maybe 5000 miles. Injectors are almost new as well replaced june last year. Lift pump is stock but has 13-14 PSI when you bump the key. Truck is stock. No CEL on. Thanks in advance for your responses.

Thanks for the comments. I'm definitely going to drive it until something else in the ecm fails causing more problems. It doenst really do it too often so i will just keep an eye on it. Might be some strange sequence of events im doing causing it. I was hoping for a quick sensor swap or something simple.

So if its not doing it anymore would that indicate an ECM problem? I have 275s so it should react similar to stock. I like the feature just noticed it occasionally not working.

Well thats a bummer......Mine is similar to yours in that it only does it occasionally. I would say once every 2 weeks. My earlier post may not have been clear enough on the frequency.

Im having a strange issue occasionally. I have a 98.5 with a 5 speed transmission. When I let the clutch out, the truck usually kicks the throttle up and the truck starts to move without adding fuel from the pedal. It has recently started not doing this requiring me to use the pedal to start from a stop. Its intermittent and seems to do it when the engine is cold. The truck has RV275s and a new injection pump recently. Everything else is stock. Thanks BIll

This very thing has happened to me in the past. I have no idea why, just did it a couple times then fixed itself. Sorry that doesnt help much.

Has anybody on here had any luck with the cheap Amazon winches? I just picked up a 12000lbs viper recovery from a company called motoalliance. Looks like it has a decent warranty. I bought it to pull trees up to the road for firewood. We shall see i guess. Ill post an update once i get some use out of it. Merry Christmas everyone.