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89-93 PowertrainDiscussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING
First, my truck idles MUCH too high. I don't have a tach yet, but it sounds REALLY high compared to other trucks. I am also seeing other tendencies that would indicate a higher idle than normal. First, when I crank it up, even when cold, it fires up faster than any truck I've ever owned...less than half a turn of the starter and it's running. Seems like this could be a sign, also, there is a big jolt/shock when switching into gear from Park or Neutral.
I have read about a screw to adjust idle, and I imagine I could find out where it is, but I'm really looking for advice from you guys about adjusting it. How much adjustment drops 100 rpm, etc...and tips or pointers you could give me would be great. Thanks.
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1998 12V 3500 4x4...You know what it is
A fast start is the sign of a good engine. Looking at the injection pump from the finder side you see a long screw with a lock nut that the throttle arm hits at full throttle. That is the full throttle stop. On the back side (engine side) of the pump is an identical screw, that is the idle screw. Loosen the lock nut and back the screw out until you reach 750RPM. Then lock the nut.
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91.5 W250 4X4 5spd 3.07s HTB2 62/13SS DE 4" exhaust M&H M2 and timing device BHAF DAP 7X.010 tuned pump pre/ post EGT
92 W250 Xcab HD auto 3.54 modded H1C turned fuel pin
The Following User Says Thank You to Left out in the cold For This Useful Post:
A fast start is the sign of a good engine. Looking at the injection pump from the finder side you see a long screw with a lock nut that the throttle arm hits at full throttle. That is the full throttle stop. On the back side (engine side) of the pump is an identical screw, that is the idle screw. Loosen the lock nut and back the screw out until you reach 750RPM. Then lock the nut.
what you said, yes indeed. unless the dern screw want to be a pain. mine was so i took a dremmel tool and started grinding away at the end of the screw until i got the rpm i wanted
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92 4x4, fuel screw turned in all the way, starwheel dropped to the bottom, 40 hp injectors, machined pin, detroit locker lets me smoke 'em evenly. auto meter pyro.
God Bless Our Country and Damn The Goverment
what you said, yes indeed. unless the dern screw want to be a pain. mine was so i took a dremmel tool and started grinding away at the end of the screw until i got the rpm i wanted
Your not fooling anyone. We know you and power tools.
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91.5 W250 4X4 5spd 3.07s HTB2 62/13SS DE 4" exhaust M&H M2 and timing device BHAF DAP 7X.010 tuned pump pre/ post EGT
92 W250 Xcab HD auto 3.54 modded H1C turned fuel pin
mine was easy to adjust. took about 5 min to find 700rpm. but it wasn't hard at all.
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had a 1992 w350 non-dually, smoke screw fully turned, starwheel dropped to the bottom, bully dog fuel pin, power screw fully turned, 100hp injectors, 4600 gov, HX-40, No WasteGate, 6" stacks, 3" lift, K&N, and 817 Tranny(blew turbo and exploded)
Your not fooling anyone. We know you and power tools.
more power
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92 4x4, fuel screw turned in all the way, starwheel dropped to the bottom, 40 hp injectors, machined pin, detroit locker lets me smoke 'em evenly. auto meter pyro.
God Bless Our Country and Damn The Goverment
I also don't have a tach, an after adjusting my power screw the truck idled high enough to be a pain at stop lights. I just used my ear, listened for a smooth quite idle, made sure the oil pressure was still good and called it a day. Make sure and put it in drive after you adjust it to make sure it's still smooth under a load with the A/C on.
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05' 3500 dually 4X4 QC 6 speed! - In for heart surgery !
93' cc srw 2wd - 60mm /sticks, 366 /pump tweaks
92 2WD SWB in the making...
A fast start is the sign of a good engine. Looking at the injection pump from the finder side you see a long screw with a lock nut that the throttle arm hits at full throttle. That is the full throttle stop. On the back side (engine side) of the pump is an identical screw, that is the idle screw. Loosen the lock nut and back the screw out until you reach 750RPM. Then lock the nut.
is there anyway you guys could post a pic i must be blind b/c im not seein it thanks to all !
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