Cummins Surge

From : mark31

Q: worse. wonder what changing the fuel filter had no effect. thanks get them to test the injectors. 101 youve got a bad or at least carboned-up injector. .

Replies:

From : ratchettrack

on 26 dec 2005 143258 -0800 brant brantbarney@hotmail.com wrote i have a 2001 dodge dakota with a 3.9 v6 and 58000 miles. recently when stopped at a stop light the oil pressure needle drops to the bottom. it happens consistently. in fact anytime the engine is at full operating temperature and the engine is idling the oil pressure drops to 0. i took it to my mechanic last week. he took the sending unit off and installed a manual oil pressure gauge. the pressure at idle was indeed 0 psi. at higher rpms he said the pressure would rise to around 40-50 psi. his diagnosis the engine needs to be rebuild. has anyone else had any experience with this situation i would like to at least get some more opinions as it seems premature to have to rebuild an engine at 58000 miles. are there any alternatives to rebuilding the engine thanks for any help in advance brant run 20w-50 oil in it. it will be fine. beekeep .

From : tom lawrence

on sun 25 dec 2005 111859 -0700 miles nope@nopers.com wrote snip i tend to think that mpg is best when at the lowest rpm that the engine doesnt struggle for the task at hand. if it starts to bog down mpg drops. higher rpms that produce wasted power is wasted gas too. me too... i remember back in the 80s i got my first add-on trip computer.. it changed a lot of my driving habits.... i remember that the speed limit was 55 mph and in 5th gear my toyota pickup got its best instant-readout mpg at about 68 to 70 mph... my guess is that was the sweet spot on the power curve... i also used to go up a 5 or 6 block long hill on the way home... always put it in 3rd 5 spd stick and kept the rpms low but not quite lugging thinking that i got better mpg that way... i found that going up the hill in 2nd a slightly higher rmp than when i was cruising the freeway actually got much better mpg up the hill.. i should have known better especially with all the 2 stroke bikes i used to ride but sometimes you have to see the numbers.. *g* mac please remove splinters before emailing .