Engine/Transmission (1998.5 - 2002) Black smoke after injector install

[02dodger]

I installed RV 275 bosch injectors as a mild upgrade from stock. When under a load and accelerating I now see a black smoke cloud. My truck has 4 inch exhaust BHAF, auto transmission and a mild quadzilla 3 position chip. stock, mpg and power. It smokes with all three although more under the power option. Turbo is the small stock turbo but with a j hook on the waste gate. Since my truck never smoked with the stock injectors I'm wondering if anyone else has had this issue?

 

[BigPapa]

That's what happens when you add fuel.

 

[Larry Willard]

Mine would smoke a little with 275's especially at low boost and heavy throttle. After the Edge EZ it would smoke a lot more and slip the clutch before the South Bend went in.
Larry

 

[VolsFan]

Mine would smoke a little with 275's especially at low boost and heavy throttle. After the Edge EZ it would smoke a lot more and slip the clutch before the South Bend went in.
Larry

Mine does the same, running the exact setup. Can control the smoke if you don't mash the throttle taking off from a dead stop. It will smoke good between shifts when on the throttle heavy. I never had to worry about clutch slippage as a south bend was installed in mine prior to me buying the truck. I guess the next step is to get more air in it to control excess smoke. I don't put many miles on mine a year so its not a priority, one of these days it would be nice to clean it up with a different turbo and not see black clouds coming out the pipe, I do make a conscious effort to control it most of the time

 

[Tractorat]

Ill be following this thread. I was under the impression it is not a good idea to add rv275's to a stock auto trans.

 

[phantomusa]

With bigger injectors you should upgrade the turbo also more fuel needs more air

 

[Joe Mc]

Like stated above:
1-more fuel added will smoke - needs more air = most likely you'll need a bigger turbo. 2-more power = more chance for driveline issues. In your case the auto trans is the weak link - as mentioned by others with std trans they've gone with south bend clutch. In your case - auto - you need to consider how many miles are on the stock trans, has it been routinely serviced (fluid, filter and band adjustment), does it have the stock trans cooling system "only". Adding a double deep MagHyTech pan will help somewhat as it's finned aluminum and increases fluid capacity (I think by about 2 more quarts). More capacity allows a bit more cooling, but not much. I'd start looking at a diesel performance trans rebuild. You might say "But my trans is fine?" However, it may be "for now", but now that you've added more power that "for now" could end tomorrow... Don't wait till you start having slip issues. Start saving $$$ as typically you're looking at around $4,000.00 for a reputable diesel trans outfit of which there a plenty mentioned on this site, too many to list in fact. Not trying to sell you on any particular outfit, just sharing my experience with DTT (Diesel Transmission Technologies) = I bit the bullet back in mid 2001 with around 129k miles and have had no issues since, presently 224k miles. The stock auto will not, at least for long, withstand the added power - with power comes torque don't forget so the stock auto really can't take it. Note in my signature 522 RWHP and 998 RWTQ. As it is mentioned numerous times here, BOMB'ing (Better Off Modified Baby) is indeed a slippery slope. If you are not prepared for the "slide" then consider selling your 275's and acquire a fresh set of stockers. MHO.

 

[02dodger]

Thanks for all the input and advice. I did forget to mention I had my transmission rebuilt, internals upgraded and a billet low stall toque converter as the stock one was slipping. I also have a larger capacity aluminum transmission pan and I installed an electric fan over the transmission cooler (needed it when towing and going slow, helps keep the temps in check.) Now I'll have to consider bigger turbo or going back to stock injectors.

 

[rotohead]

IF you have a manifold pressure guage just wait until you build 10 psi then go mash the gas pedal all you want. You just need to build some boost before injecting added fuel. Simple.