Rotax3006

Just posting the follow up stuff. Put a new pump in and all appears to be solved. Went with an industrial injection pump from a local shop. Had a little trouble getting it started, mainly from weak batteries. Up and running with no codes. Thanks Bill

I have had mine not engage while I was stuck. Had to go forward and back to get the splines lined up. Also had a line fall off right under the cab that feeds the actuator.

I was considering running mine that way as well. It has definitely been broken for a long time. My vp went out at 252000 so I don't know how important it really is. It really looks like an after thought from Cummins its now a particularly well refined bracket.

Thanks guys merry Christmas

Hi guys Thanks for all the responses on my last post. It’s nice to find a page that has knowledge as well as courtesy. So I pulled my VP44 and found a broken rear bracket. Looks like I need to remove and replace/weld. My question is can I remove the vacuum pump with the injection pump removed or will the pump gear fall down. Looks like both run off the crank from what I can see. Also looks like a good time to rebuild that oily mess. Thanks and Merry Christmas Bill

Thanks for all the input guys. I figured it was the vp, I have been living on borrowed time I guess. I have not done anything special to get that many miles. Stock lift pump changed couple times, Howe’s treatment in the winter. Try to get fresh fuel at the truck stop not the junk that sets around town. No tuner or power mods. Current fuel pressure is 13 according to my cheap oriley gauge. I bought the truck with 50000 miles from my cousin who bought it new. So I’m sure it is original pump. Thanks again .

Hi guys First off thanks for the add this looks to be the place for 2nd generation questions. I have a 98.5 24 V that stopped running. It was running ok and I parked it for about 10 minutes, wouldn't restart. Turned over fine just wouldn't fire. Changed the fuel filter and bled the system. Cracked the injectors and only got fuel out of cyl 3 and 4. It seemed like it was only the lift pump pushing fuel not the injector pump, fuel just ran out when the lift pump was going. Pulled it and managed to get it started (have to love a 5 speed). Had a major stumble on the low end but once you got going it did ok. Not great but got it home. It would die if you let off the pedal but as long as you kept it above 1500 it would stay running. Pulled the codes and had the following P1693, P0336, P1689, P0216. I did the hotwire test and it would make a faint click sound when you energized the pump but it wouldn't start. I'm thinking the VP-44 finally died at 252000 miles but I don't want to spend $1500 if there is something else I should look at. Thanks guys BIll F.