I need a bigger turbo....

[CRSMP5]

 that is a interestign thought too...have to have belt off and pisons mid stroke for that way.. but that may work well too.. a oddidea.. but may work we.. going to have to have him try that before h epulls the cam if a lifter feels real easy to depress..

[CRSMP5]

it is really odd allright.. it feels like you hit limp on a mk4.. big clouds of dark black smoke.. it pulls and pulls then feels like the sneeze valve on a 1.6 opens up almost.. boost 18~19 psi.. under the 20 mark.. boost does not drop.. but tach is between 3.5 and 4k..

its like the govener kicks in and stops it..

if it was say a fuel pressure issue.. dumping the clutch IMO should make it stall due to air.. does not do that..

well libby.. guess in couple weeks you get to see it.. hope this helps you ponder ideas in your brain..

[libbydiesel]

If it's blowing black smoke, it's getting fuel.  Did you guys check valve springs?

[bbob203]

I unscientifically checked them they all felt equal.

[CRSMP5]

y.. if it was a floated valve.. id say grey smoke for unburnt fuel.. and its not a compression loss.. it is like the governer is stopping it.. it feels just like say running a stock 1.6td with wastegate can rotted off up to teh sneeze valve in the manifold opens.. except that drops boost pressure as my b3 does that... never had wastegate since i built it in 02..

it feels like a auto mk4 with vnt issues hitting the limp when the vanes stick.. except that need to turn key off and on again to get power back..

it really is odd...

i wonder if his muffler insides have fallen apartt... straight pipe later tis week is his goal.. the eye hole in the bumper fo rtoe hook has soot running right into it.. which ports up to his body vent... and he has a few leaks by his shifter.. so doing like i said should make it quiet..

[libbydiesel]

It can't be the governor kicking in or there would not be any smoke at all.

Is there any chance something is restricting the intake before the compressor inlet like a flex hose collapsing?  Air filter that is partly clogged?

[410]

I had a similar high rpm power cutout before and it turned out the pump was starving for fuel.  I had a lift pump in the system so I never thought that could have been the issue.  Found the problem by teeing in a gauge into the supply line going to the pump.  The gauge would read up to 20 psi and also read vacuum.  The pressure was normal at idle, 3-5 psi but as soon as I would load it up the pressure would drop and start pulling vacuum.  Turned out to be a restricted fuel line in the tank. 

[CRSMP5]

sadly.. i wonder if the rubber is by the strut tower... it was thought of though...

and dark black.. no egr... so not like it stuck/blew open..

boost pin? normally under boost it not black smoke.. its slight hazy... when it screws up it rolls coal..

[410]

You gotta remember the problem fuel starvation issue causes.  If the internal pressure in the pump drops because of a lack of fuel, so does the dynamic advance.  Fuel at the wrong time at high rpm=smoke.

[bbob203]

Im going to install a lift pump when i get home on saturday. Also getting 2.5" exhaust from dp back friday if this place chris is talking about is as well priced as he claims. Aircleaner is a k&n unit w/ about 20k on it since new. Most of the time you can take it past the point where the issues surfaces ...I've definitely had it to <4k rpms w/ no issues.

[CRSMP5]

but i doubt that... if it rolled coal.. then got hazy... but it goes from hazy to coal so its getting real rich.. but not raw fuel..

[8v-of-fury]

but i doubt that... if it rolled coal.. then got hazy... but it goes from hazy to coal so its getting real rich.. but not raw fuel..

Well what else could it be??  brand new pump that was tested.. New injectors too?

Its clearly a fuel issue right?

Ive had similar on my tdi after an aggresive 1st gear burn out to damn near redline. Where it popped and crackled and i thouhgt i popped the turbo. Lol the clear fuel lines had air in them aswell lol

[libbydiesel]

It could be fuel supply but I would not discount air yet.  The blowing black smoke sounds more like limited air supply to me.  I'm not a fan of the K&N filters.  They pass too much fine particulate.  I have also had an air filter get to the point of limiting airflow (vacuum registering on my vac/boost gauge) in less than 5,000 miles of travel on pavement. 

[CRSMP5]

i told him yesterday i think to pull it off the turbo if it screws up and not really dusty out to see if it changes anything...

he is straight piped now... waiting to hear his thoughts after he rides in it couple days... so far.. "feel like more power down low" has been said... but should spool faster..

[bbob203]

I can't wait to get all the extra weight of water jugs and and an 020 out and feel the extra power for all it is now. Currently en route back to kentucky( at a rest stop sleeping.)

+veg 216 nozzles this week supposedly 10-15 more hp and 30ft/lb of torque.