start up smoke question

[DodgeFreak]

I've had the pump turned up 2 turns for along time now, and like all\most blow smoke at start up, since its in full fuel. I was looking at the pump diagram, and could you tune some of the smoke out by messing with the gov. adjustment screw?? What will be the negative effects??? I haven't put a lot of thought into it but some. It's a pain when i'm in a parking lot because I don't want to fill the persons car beside me with smoke so I usually wait until they get in the car before firing up, or wait for the people to pass, If I could get it to be a haze instead of a dark cloud I don't think people would mind so much.

[oldestof11]

How much smoke are we talking? A puff is unavoidable. It will be at full fuel because the gov isn't spinning to even out the spring tension.

[cmann250]

As per the owner's manual, start it at part throttle. I've done that and pretty much instantly let off the throttle. It doesn't smoke near as much.

[RCCUMMINS89]

AFC lever adjustment has some control over it. If you put a lot longer slide pin in, and a super fat fuel pin (conservative low end)... it'll tame it down a lot. With my big ol' injectors, my initial "puff" is less than my ol' man's bone stock non I/c truck puts out.

[DodgeFreak]

Sorry I've been busy and haven't had a chance to get back to this...

How much smoke are we talking? A puff is unavoidable. It will be at full fuel because the gov isn't spinning to even out the spring tension.

Heavy Dark cloud I'm going to try and get a vid of it...

As per the owner's manual, start it at part throttle. I've done that and pretty much instantly let off the throttle. It doesn't smoke near as much.

Yeah, that doesn't help, only thing it does is push the heavy smoke out faster

AFC lever adjustment has some control over it. If you put a lot longer slide pin in, and a super fat fuel pin (conservative low end)... it'll tame it down a lot. With my big ol' injectors, my initial "puff" is less than my ol' man's bone stock non I/c truck puts out.

how much for a longer slide pin and what pin? BD? how much is a bd pin???

[RCCUMMINS89]

5/32" drill bit for a custom slide pin..... and custom grinding on the inside of the afc housing. Then, yes a bd pin. That's what I run.... and then, of course, you'll have to custom grind your bd pin in order to get full travel again.

[cmann250]

As per the owner's manual, start it at part throttle. I've done that and pretty much instantly let off the throttle. It doesn't smoke near as much.

Yeah, that doesn't help, only thing it does is push the heavy smoke out faster

I tried that again and you are correct, it makes it worse if anything.

[DodgeFreak]

As per the owner's manual, start it at part throttle. I've done that and pretty much instantly let off the throttle. It doesn't smoke near as much.

Yeah, that doesn't help, only thing it does is push the heavy smoke out faster

I tried that again and you are correct, it makes it worse if anything.

the way the pump is its already at full fuel so pushing on the pedal doesn't do anything but keep it closer to full fuel for longer since the gov will have a harder time pushing the lever back off full fuel. I figured I'd give it a try anyways doesn't hurt anything and I've seen strange things happen.

[ellis93]

I'll trade you the pump off my dodge,it's worn out and doesn't smoke nearly as bad

[DodgeFreak]

sounds like a fair trade.....lol....should of bought the 14mm h&r that was for sale on here.... and cf

[oldestof11]

I think it was Jimbo on DTR. He installed a 10 psi switch into the top of the oil filter housing/cooler deal. Then wired it to a relay that was a safety lock circuit. The truck had to crank around 4 revolutions to obtain the 10psi of oil before it would open the relay to the FSS. He said it cut down on start up smoke and he knew it had oil on start up.

[moab4x4]

Thanks for that last tip! That would be a great idea for the times of year that my truck is not used as frequently, as well as a good safety cutoff if I lose oil pressure. (I wheel my truck pretty hard and anything is possible there).
I also should reduce my startup smoke, a while back I checked my mirror prior to backing out of the convenience store parking lot and saw the puff of start up smoke pass through the inhabited Subaru parked next to me. The part of me that wasn't laughing felt bad.