Yeret
The Village Drunk
- Joined
- Oct 2, 2014
- Posts
- 938
- Reaction score
- 178
- Ram Year
- 1999
- Engine
- 5.9 Magnum
Okay guys, this is something that I really should have posted long ago but, eh, anyway, I'm posting it now.
Here's the deal, some of you may remember the whole kerfuffle that I had with a mechanic friend of my dad involving tearing my engine apart, freshening it up and putting it back together again. A ridiculous process that spanned over several months.
In the end, as things went, screwups and misunderstandings on both ends were ultimately resolved and we have happily gone our own ways. In other words, no hard feelings. In my end, the engine as far as I've owned it has never been happier, especially with a tune courtesy of Flyin' Ryan.
Anyway, my main man was well on pace with me and had noted that when the distributors on these engines have been pulled and then reset with base timing, they have to be fine-tuned via DRBIII scanner due to the exacting relationship between the cam and crank sensors and their impact on injector firing. Unfortunately, neither he or I had access to this multi thousand dollar tool and we never had the chance to see how the engine would respond to this fine-tuning before, well, the roof collapsed, figuratively speaking.
Here's the deal now. Ever since the freshening, I've done some basic bolt-on stuff to the engine and of course had it SCT-tuned. However, no matter what I've done, the engine hesitates for a split-second or even more when taking off from a sit-still, especially when cold.
Basically, while sitting still, I step on the gas and there's this split-second hesitation before the engine "grabs" and goes. I can clearly hear the engine drawing in air when I step on the gas but the truck just doesn't jump and go right away as I expect that it would. It seems to me like there's a delay in fuel delivery with throttle input.
This is an issue that was not present before the dizzy was pulled...
Under low throttle/light load at less than 2,000 RPM, the engine has this weird oscillation which can very clearly be heard courtesy of my nice, open exhaust, LOL.
My question is since I've never had my fuel syncing fine-tuned, would that be causing my "hesitation" and aforementioned "oscillation" issues? I will say that when the RPM passes the 2,000 mark or if I just gun it, these issues disappear and the engine pulls like an SOB, way more than it ever did prior to my tune.
I'm not denying that my fuel syncing needs to be fine-tuned but I'm just wondering if this is what's causing my aforementioned issues.
Here's the deal, some of you may remember the whole kerfuffle that I had with a mechanic friend of my dad involving tearing my engine apart, freshening it up and putting it back together again. A ridiculous process that spanned over several months.
In the end, as things went, screwups and misunderstandings on both ends were ultimately resolved and we have happily gone our own ways. In other words, no hard feelings. In my end, the engine as far as I've owned it has never been happier, especially with a tune courtesy of Flyin' Ryan.
Anyway, my main man was well on pace with me and had noted that when the distributors on these engines have been pulled and then reset with base timing, they have to be fine-tuned via DRBIII scanner due to the exacting relationship between the cam and crank sensors and their impact on injector firing. Unfortunately, neither he or I had access to this multi thousand dollar tool and we never had the chance to see how the engine would respond to this fine-tuning before, well, the roof collapsed, figuratively speaking.
Here's the deal now. Ever since the freshening, I've done some basic bolt-on stuff to the engine and of course had it SCT-tuned. However, no matter what I've done, the engine hesitates for a split-second or even more when taking off from a sit-still, especially when cold.
Basically, while sitting still, I step on the gas and there's this split-second hesitation before the engine "grabs" and goes. I can clearly hear the engine drawing in air when I step on the gas but the truck just doesn't jump and go right away as I expect that it would. It seems to me like there's a delay in fuel delivery with throttle input.
This is an issue that was not present before the dizzy was pulled...
Under low throttle/light load at less than 2,000 RPM, the engine has this weird oscillation which can very clearly be heard courtesy of my nice, open exhaust, LOL.
My question is since I've never had my fuel syncing fine-tuned, would that be causing my "hesitation" and aforementioned "oscillation" issues? I will say that when the RPM passes the 2,000 mark or if I just gun it, these issues disappear and the engine pulls like an SOB, way more than it ever did prior to my tune.
I'm not denying that my fuel syncing needs to be fine-tuned but I'm just wondering if this is what's causing my aforementioned issues.