Author Topic: 2800rpm fuel cut?  (Read 4892 times)

April 13, 2012, 02:26:09 pm

Gator79

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2800rpm fuel cut?
« on: April 13, 2012, 02:26:09 pm »
Ok so what I have is a 1.9td with a callaway turbo kit with the g60 intake. The pump was rebuilt less than 3000 miles ago. I just did the gov mod with 4 washers and new fuel filter.

The problem is now it still will not go above 2800rpm in any gear.  I get to this point in every gear same speed  and it is like I just hit a wall, it feels like the fuel just cuts out. Any help would be awesome.

Reply #1April 13, 2012, 02:32:18 pm

745 turbogreasel

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Re: 2800rpm fuel cut?
« Reply #1 on: April 13, 2012, 02:32:18 pm »
did it have that problem before?

Reply #2April 13, 2012, 02:44:23 pm

Trips_B

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Re: 2800rpm fuel cut?
« Reply #2 on: April 13, 2012, 02:44:23 pm »
was the pump rebuilt by a reputable mechanic?

Reply #3April 13, 2012, 03:20:30 pm

Gator79

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Re: 2800rpm fuel cut?
« Reply #3 on: April 13, 2012, 03:20:30 pm »
It had a non td pump on befor and no problem.
The pump was rebuilt by diesel injection services in Portland Oregon.

Reply #4April 13, 2012, 03:37:12 pm

Gator79

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Re: 2800rpm fuel cut?
« Reply #4 on: April 13, 2012, 03:37:12 pm »
One other thing is when it stops revving it starts to blow white smoke. At no other time will it smoke.

Reply #5April 13, 2012, 04:26:43 pm

billybobf

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Re: 2800rpm fuel cut?
« Reply #5 on: April 13, 2012, 04:26:43 pm »
ok, not big on IP rebuilds, but is it possibly when you did the gov mod you didnt put the arm back on right?

Reply #6April 13, 2012, 04:40:00 pm

Gator79

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Re: 2800rpm fuel cut?
« Reply #6 on: April 13, 2012, 04:40:00 pm »
Possible but its running the same as it was befor the mod. The gov mod did absolutely nothing for the rpm range.

Could it be timing, or old injectors? I believe there is n/a injectors in right now if that makes a difference.

Reply #7April 13, 2012, 05:00:04 pm

JamesT

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Re: 2800rpm fuel cut?
« Reply #7 on: April 13, 2012, 05:00:04 pm »
Timing not advancing? Is the advance piston installed correctly? How does it run from, say, 2000rpm to 2800? Does power diminish before it falls off the face of the earth, or is it pulling hard right to 2800 and then disappears?
93 Golf - AAZ with some fueling
78 Rabbit - 1.5 DIESEL (finally)
[(+)===o===(+)]
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Reply #8April 13, 2012, 05:11:53 pm

Blocksmith

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Re: 2800rpm fuel cut?
« Reply #8 on: April 13, 2012, 05:11:53 pm »
Have you checked the adjustment of the throttle lever arm (very easy to be off a tooth on the spline), the max fuel screw, idle screw, and full throttle stop screw?

If I had to guess just sitting here, it sounds like they didn't get your lever back on in the same orientation. They might've neglected to note the original orientation when they tore your pump down. But Bosch put little alignment marks on the lever and shaft top for a reason, so they stay in the same orientation.  ;)   The lever arm only has about 45 degrees of travel, so being off a tooth or two is a BIG change for how much the throttle linkage can move inside the pump.  

Green 83 Rabbit 4dr, 5 speed ACH trans swap, ported 1.6D mech lifter w/ vnt15, na pump w/ gov mod, gasser intake mani, 2.5" exhaust, bilstein sports and cut mk2 springs, ss brake lines, 14" vw bottlecaps

Reply #9April 13, 2012, 05:22:28 pm

Gator79

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Re: 2800rpm fuel cut?
« Reply #9 on: April 13, 2012, 05:22:28 pm »
It pulls good right up to 2800 then just stops going any higher.
Is there a factory spec on where the arm needs to be or is it different to every pump?
And all settings are untouched from since getting the pump back.

Reply #10April 13, 2012, 05:31:50 pm

billybobf

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Re: 2800rpm fuel cut?
« Reply #10 on: April 13, 2012, 05:31:50 pm »
Yeah, when you pull the arm off your supposed to mark it perfect before you put it back on

Reply #11April 13, 2012, 05:49:04 pm

Gator79

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Re: 2800rpm fuel cut?
« Reply #11 on: April 13, 2012, 05:49:04 pm »
Yeah I did from what the rebuild was. But what if they did not get it correct or it was not correct befor they got it. Is it somthing I just have to play with till it feels right.

Reply #12April 14, 2012, 12:05:23 pm

guy plain

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Re: 2800rpm fuel cut?
« Reply #12 on: April 14, 2012, 12:05:23 pm »
X2 on the boost dump valve on the intake. It blows when boost goes much over 10psi, and shuts again when well below 10psi. It did this on mine when it had been laid up for a few months, the wastegate on the turbo had siezed so it was on full boost all the time. Car would go like a scalded weasel then "poosh!" flat as a fart for a couple of seconds, then off it would go again. About a three or four second cycle. Fortunately it freed up after a couple of miles. Check the turbo isn't overboosting too
 mine was doing the same thing...but only for a couple minutes at a time then would go again.....
  mine turned out to be the pump...pulled the sut down solinoid and all this metal flowed out with the deisel....my back up pump dosent seem to be doing well either ...

Reply #13April 14, 2012, 12:22:24 pm

92EcoDiesel Jetta

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Re: 2800rpm fuel cut?
« Reply #13 on: April 14, 2012, 12:22:24 pm »
Have you checked the adjustment of the throttle lever arm (very easy to be off a tooth on the spline), the max fuel screw, idle screw, and full throttle stop screw?

If I had to guess just sitting here, it sounds like they didn't get your lever back on in the same orientation. They might've neglected to note the original orientation when they tore your pump down. But Bosch put little alignment marks on the lever and shaft top for a reason, so they stay in the same orientation.  ;)   The lever arm only has about 45 degrees of travel, so being off a tooth or two is a BIG change for how much the throttle linkage can move inside the pump.  



Do you know if there are any fine adjustments in between spline tooths? If there is I haven't found it yet. With the limited lever arm travel (I think 45 deg is generous), it is difficult to set the splines just right so the idle is good and at the same time can reach full range of throttle.

Reply #14April 14, 2012, 01:49:13 pm

Blocksmith

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Re: 2800rpm fuel cut?
« Reply #14 on: April 14, 2012, 01:49:13 pm »
You'll probably have to set the idle after you get it on the splines correctly. I'm guessing the guys who rebuilt it set the idle for the wrong spline setting.

Do you have / can you post a close-up pic of the splines, and another of the top of the pump so we can see the idle and full throttle screws?
Green 83 Rabbit 4dr, 5 speed ACH trans swap, ported 1.6D mech lifter w/ vnt15, na pump w/ gov mod, gasser intake mani, 2.5" exhaust, bilstein sports and cut mk2 springs, ss brake lines, 14" vw bottlecaps