Engine/Transmission (1998.5 - 2002) black smoke

[GRichins]

have 1999 dodge diesel pure stock has started to blow black smoke on take off has never done it before 140000 miles with no problems can anyone help

 

[darkhorse]

have 1999 dodge diesel pure stock has started to blow black smoke on take off has never done it before 140000 miles with no problems can anyone help

The first thing I would do is check for boost leaks.

 

[GRichins]

i did that but didnt find ant

 

[GRichins]

looks like i hit the t instead of the y

 

[TRAMPLINEMAN]

Plugged air filter?

 

[Joe Mc]

Remove the turbo discharge boot before the intercooler and see if it's oily. If so you've got a seal bad torbo oil seal. Is the engin oil low at all? Loke darhorse mentioned - I think you are experiencing low boost. If it look like a black smoke bomb when you nail it from a stop and doesn't really take off like it used to, you could have a crack in a boot that you just missed. Hope it is something simple. Good luck to you.

 

[GRichins]

thank you guys i guess i will have to check closer



grichins pure stock

 

[ToolManTimTaylor]

Just by "Looking" at all your connections does not cut it. If you have the time you can make a boost leak checker really easily.



Basicly a 4" threaded PVC coupler , A 4" Pvc threaded cap , a 4" Fernco style coupling , 3/8" 2" threaded Tee with a 1/8" gauge port (A psi Guage) , a 3/8" ball valve , and an adapter from 3/8ths to whatever style air chuck you either use or have access too. You then can pressurize the intake tract from the turbo side.



At rest you cannot see anything that can cause a leak. Case in point ever scince I put on the Garrett turbo I havebeen running hot. On the way out to indiana I noticed I was running hot. 900* average on flat land empty is a bit much. Last friday nite at coffee nite I threw on TqT's boost leak checker thingy and lo and behold I found out that my boost leak is ... . a split intercooler :{



You can never see A leaking gasket , cracked manifold , split intercooler , torn boot hoses. Remember that theee trucks in stock form muster on average 18 PSI. @ 10 PSI the stock hoses are allrady are at 1/4 more their origional size. Imagine 50 PSI :-laf.

 

[CTD12V]

To bring this thread back to the top --



ToolManTim, I was going to try to make a boost leak tester with one of those 4" Fernco flexible rubber clamp couplings from Home Depot, but when I got it home, I found that it is designed to fit over a 4" ID PVC pipe, which leaves about a half inch too much space since PVC pipe walls are about 1/4" thick, and the inlet to the turbo is pretty much 4" even. So have you found a true 4" coupler, or is there a way to rig one like I got? Thanks for any suggestions.



CTD12V

 

[CumminsAholic]

Would a bad injector do this? Say with a way low pop off pressure?

Corey

 

[CTD12V]

Helllo, Anybody?

 

[Devan Manis]

it would probably be acompanied by a funky idle.

 

[ToolManTimTaylor]

Hey 12V,



It will fit (However loosely but make sure you use quality clamps in double fashion!!) And don't just go filling the system all sortsa fast like . . with the sudden surge it will go bang!!! Bring it slowly up to say 8-10 lbs. Have a windex bottle -O- soapy mix handy and once under pressure start sprayin'.



Now don't freak out that pressure drops ... it will to a point as there are factors like valve overlap , blowby , etc that happen. what YOUR concern is to keep leaky areas un leaky up front.

 

[CTD12V]

Thanks, Tim! Looking at the coupler, it sure doesn't seem like it would clamp down enough to make up the difference in diameter, but I guess you can't always tell "just by looking at it". Now where have I heard that before . . . I'll give it a try. Thanks.



CTD12V