Odd one time bucking or surging issue

[snowshoveler]

Well if this was 30 years ago and your 6 cylinder was still a Dodge ( slant 6, leaning tower of power) it would do the exact same thing, and maybe for a longer part of your drive.

So I would say your fuel might have had a tiny bit of gelling going on. Once you got a bit of heat into it all was good.

I am surprised your wife didn't smack you for this miss on your part.

Oh wait...maybe this is a test.

Remember I am from Canada and everyone thinks we all live in igloos so we know all about crappy fuel.

 Regards Chris

[AH64ID]

Michael,

 

Could you see the surge in your boost gauge?

[Mopar1973Man]

No. When the truck cold I typically hold my boost down below 10 PSI till it warms up. As for today it didn't do it at all. I fired up and left towards Riggins, ID and on issues at all.

[AH64ID]

Bucking and surging are two different things to me. Surging is a fuel quantity variance for a constant load, and bucking is a fuel delivery issue, where fuel starts and stops quickly.. Surging is "smoother", as there isn't a fuel delivery issue.

Which do you think it was?

My first thought was you had some fuel flow issues, possibly due to gelling. The one time I gelled it was a buckin bronco. Where is your pressure sender?

[Mopar1973Man]

Fuel Temp was at +44*F from a unheated shop. Less than 3 miles from home. Current temp when I left the house was like +27*F or so.

 

Fuel pressure sender is on the fender. (Needled and Snubbered)

 

 

My first thought was you had some fuel flow issues, possibly due to gelling.

 

 

If it was a gelling issues it should of happen in New Meadows at -3*F temperature where it ran just fine.

[AH64ID]

Where is the pressure sender in relation to filters and such? Is it from the line post pump? Or the port between filters on the pump?

 

1/4 tank issues? You were low when you got back right? I wonder if the cold was doing something funny??

 

Do you think it was bucking or surging?

 

Odds are it was nothing, but if your anything like me your going to be thinking about it for a while.

[Mopar1973Man]

Where is the pressure sender in relation to filters and such? Is it from the line post pump? Or the port between filters on the pump?

 

1/4 tank issues? You were low when you got back right? I wonder if the cold was doing something funny??

 

Do you think it was bucking or surging?

 

Odds are it was nothing, but if your anything like me your going to be thinking about it for a while.

 

(all questions separated per line)

 

About 3" from the VP44 in the main line after the last fuel filter (stock can).

 

Yes, It is in the line post pump and post filters.

 

No. It's not in between filters.

 

5/8 of a tank when I left.

 

Yes, I had 1/8 of tank with the low light on when I hit Riggins, ID for fuel. No issues that morning.

 

If the cold was doing something funny you have to remember it was 44*F inside the shop where the truck was parked. The outside temp here at the house was about 27*F. It had the issues here near the house but by the time I got to New Meadows proper it was -3*F so it should of really shown up then but never did.

 

Hard to explain more like a shuttering motion when you gave it throttle. If you backed off it ran fine. Once warmed up it was fine. But again it never happened again.

 

Oh for sure I'll be thinking about it.

 

VP44 is just to the left and the stock filter can to right.

[Yankneck696]

It's a Chrysler product. Must be the ballast resistor... LOL

 

Ed

[AH64ID]

I missed the adding throttle part earlier, that is inline with fuel gelling.... But we know it most likely wasn't (99.9%)... But what that does it make me think it was an issue between the psi sender and injector... Could be anything...

Original injection pump?

[island8]

Not sure if it's the same type of surge, but we seen this happen on a vp pump that finally threw a p0370 code. Took around 3-4 months for the code to come out, first it surged only on rare occasion at higher rpm's, progressively getting worse, then it finally died.

[Mopar1973Man]

I missed the adding throttle part earlier, that is inline with fuel gelling.... But we know it most likely wasn't (99.9%)... But what that does it make me think it was an issue between the psi sender and injector... Could be anything...

Original injection pump?

 

No. The OE pump failed at 50k miles under warranty... This started me down the windy trail of Cummins engines and the birth of the web site. The current pump has 190k miles on it and still going. No error codes or anything else.