Need help with my turbo.....long post. Problem solved:hopefully
All right, here goes, had my sled out for the first ride of the season, I don't know what the problem is, for the couple hours or so it ran like a champ, but it was downhill from there.
I;m runnning a OVS turbo with Garrett 3071, PL box, at 12# of boost running straight 110 race fuel.
It was pulling good, real crisp from bottom to top,,I was pretty happy at first, then on one pull, it just starting cutting out on me t full throttle on a pull, got unstuck, managed to work it out. The engine light starting coming on as well, no pattern, sometimmes flash three times, others 6, and so on. Seemed like it was okay, but shortly after did the same thing, pin it, ad about 2 seconds it would just cut out, bottom and mid range were fine up until that point. On the way out, kept on pinnig it, worked its was out, but then got very blubbery sounding on bottom and midtange, and there was a little lag when you WOT, and that seemed to be fine. All this while and into the next day, engine light continued to flash.
The next day I tried her again, for the first minute or so,it seems to be okay then soame thing. I checked the plugs, they were loose, tighten them up, (color looked good, eletrode was fine, etc) sled was again cold, warmed up, and it seemed like that fixed it again, for about a minute, but then real blubbery sounding in low to mid range, WOT after about 2 seconds it would let loose and be fine,I thought it just had to be worked out. It contined that pattern all up the trail, took a nice pull, on turn around it stalled, coming down hill. All this time it was also difficult to start as well, and wouldn't idle, I had to keep feathering the throttle.
Anyways, after pull, it seemed pretty crisp on low and bottom, but WOT would just, as soon as turbo would kick in the boost needle would spike, then cut out, then surge again, spinking, then cut out, couldn't hardly climb a hill. Did this all the way back t the truck, but also got worst because was sounding blubbery on midrange as well.
No boost leaks that I could see. A/f ratio was good, I actually increase yellow/blue mode to 3-4 at the first day as it seemed to run high. It continued to run good with the one adjustment.
The electrical up front was covered in snow? the PL box, on occasion, would show green/blue at idle? Then engine light continues to flash? I'm not sure if it was in limp mode, didn't seem like it was getting alot of snow on coolers, maybe overheating, but it didn't make a difference in deep snow either.
Got it in the garaged and got everything dried out, now it won't hardly idle at all, sputters, little backfire, then dies. Fuel pressure seems weak. Before all this it was steady at 41#, now, at 1200 RPM, it is down to aobut 25#, if I rev it to 2000rpm it comes up to 40#, but as I remember it it used to hold pretty steady at 41#, even if it did idle down a bit.
Pistons look good, no boost leaks that i can identify, all connections look secure, The check engine light went on once, it flashed once, then 6 fairly quick ones. I checked the vent hose off the ECU, it looks fine.
My Pure logic box lights up but it reads green/blue at idle, the green light is the only one that should be showing up. So I dont' know what's going on there either.
For some reason my A/F gauge isn't lighting up either, don't know what's up with that or whether it is somehow related. I'm going to check the reeds somethime this weekend, I hope, and I'll check everything good for cracks and whatnot.
Any help figuring this out would be greatly appreciated.
Merry Christmas all!
All right, here goes, had my sled out for the first ride of the season, I don't know what the problem is, for the couple hours or so it ran like a champ, but it was downhill from there.
I;m runnning a OVS turbo with Garrett 3071, PL box, at 12# of boost running straight 110 race fuel.It was pulling good, real crisp from bottom to top,,I was pretty happy at first, then on one pull, it just starting cutting out on me t full throttle on a pull, got unstuck, managed to work it out. The engine light starting coming on as well, no pattern, sometimmes flash three times, others 6, and so on. Seemed like it was okay, but shortly after did the same thing, pin it, ad about 2 seconds it would just cut out, bottom and mid range were fine up until that point. On the way out, kept on pinnig it, worked its was out, but then got very blubbery sounding on bottom and midtange, and there was a little lag when you WOT, and that seemed to be fine. All this while and into the next day, engine light continued to flash.
The next day I tried her again, for the first minute or so,it seems to be okay then soame thing. I checked the plugs, they were loose, tighten them up, (color looked good, eletrode was fine, etc) sled was again cold, warmed up, and it seemed like that fixed it again, for about a minute, but then real blubbery sounding in low to mid range, WOT after about 2 seconds it would let loose and be fine,I thought it just had to be worked out. It contined that pattern all up the trail, took a nice pull, on turn around it stalled, coming down hill. All this time it was also difficult to start as well, and wouldn't idle, I had to keep feathering the throttle.
Anyways, after pull, it seemed pretty crisp on low and bottom, but WOT would just, as soon as turbo would kick in the boost needle would spike, then cut out, then surge again, spinking, then cut out, couldn't hardly climb a hill. Did this all the way back t the truck, but also got worst because was sounding blubbery on midrange as well.
No boost leaks that I could see. A/f ratio was good, I actually increase yellow/blue mode to 3-4 at the first day as it seemed to run high. It continued to run good with the one adjustment.
The electrical up front was covered in snow? the PL box, on occasion, would show green/blue at idle? Then engine light continues to flash? I'm not sure if it was in limp mode, didn't seem like it was getting alot of snow on coolers, maybe overheating, but it didn't make a difference in deep snow either.
Got it in the garaged and got everything dried out, now it won't hardly idle at all, sputters, little backfire, then dies. Fuel pressure seems weak. Before all this it was steady at 41#, now, at 1200 RPM, it is down to aobut 25#, if I rev it to 2000rpm it comes up to 40#, but as I remember it it used to hold pretty steady at 41#, even if it did idle down a bit.
Pistons look good, no boost leaks that i can identify, all connections look secure, The check engine light went on once, it flashed once, then 6 fairly quick ones. I checked the vent hose off the ECU, it looks fine.
My Pure logic box lights up but it reads green/blue at idle, the green light is the only one that should be showing up. So I dont' know what's going on there either.
For some reason my A/F gauge isn't lighting up either, don't know what's up with that or whether it is somehow related. I'm going to check the reeds somethime this weekend, I hope, and I'll check everything good for cracks and whatnot.
Any help figuring this out would be greatly appreciated.
Merry Christmas all!
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