FUEL LEAK, CUMMINS 98 12V, ABOVE THE STARTER AND BELOW THE FUEL/WATER SEPARATOR...HELP!
From : Annonymous
Q: guys fuel leak between the starter and fuel/water separator on 98 12v motor. anyone know if this is a no-brainer ive washed the area with degreaser and rinsed and dried but havent started it yet to look/feel for the leak. waiting on some daylight so i do it right. if someone has had similar problem or can help me diagnose id be forever grateful. just dont have the time right now to go ripping the thing apart chasing a fuel leak. thanks randolf .
Replies:
From : nosey
randolfscott@hotmail.com wrote guys fuel leak between the starter and fuel/water separator on 98 12v motor. anyone know if this is a no-brainer ive washed the area with degreaser and rinsed and dried but havent started it yet to look/feel for the leak. waiting on some daylight so i do it right. if someone has had similar problem or can help me diagnose id be forever grateful. just dont have the time right now to go ripping the thing apart chasing a fuel leak. thanks randolf dont feel around for a leak. its very dangerous. a pinhole leak in a high pressure fuel system can inject fuel into your hand. its very painful and this type of injury often results in amputation. -- ken .
From : tom lawrence
dont feel around for a leak. its very dangerous. a pinhole leak in a high pressure fuel system can inject fuel into your hand. its very painful and this type of injury often results in amputation. nah hes on the low pressure side well away from the injector lines - 10-15 psi at most. the only danger there is getting your fingers a little oily as to the problem itself it could be a rotted-out section of fuel line itself though that usually manifests as an air leak causing very poor/rough running. the fittings on the fuel filter canister particularly the heater element have been known to leak as well. a technique that works well is to wash the area down with degreaser let it dry then blow a little talcum powder around the suspected area. the talc will readily show the tracks of any leak leading you right back to the source. .
From : joe myers
if you have the oem fuel filter you might want to make sure the old gasket isnt still stuck to the housing from the last change. the other thing that happens on 1st gens is the rubber return hose cracks. i have both on 89 and a 00 so have run into some of these problems. if its the filter gasket youll find the time after it blows out on the road. if its the return hose you might have hard start or other performance troubles. joemyers on 4 mar 2006 182439 -0800 randolfscott@hotmail.com wrote guys fuel leak between the starter and fuel/water separator on 98 12v motor. anyone know if this is a no-brainer ive washed the area with degreaser and rinsed and dried but havent started it yet to look/feel for the leak. waiting on some daylight so i do it right. if someone has had similar problem or can help me diagnose id be forever grateful. just dont have the time right now to go ripping the thing apart chasing a fuel leak. thanks randolf .
From : nosey
nah hes on the low pressure side well away from the injector lines - 10-15 psi at most. the only danger there is getting your fingers a little oily i know its all low pressure before the injection pump but i get nervous when people say they are going to feel around for a leak anywhere near high pressure systems. its possible the leak is in an injector line spraying fuel into that area. it may not be likely but still possible. -- ken .
From : lorne
i have had to replace both rubber lines on my truck. they both had rotted out near where they connect to the steel lines near the motor. really long arms would be a big asset to do this job!. lorne if you have the oem fuel filter you might want to make sure the old gasket isnt still stuck to the housing from the last change. the other thing that happens on 1st gens is the rubber return hose cracks. i have both on 89 and a 00 so have run into some of these problems. if its the filter gasket youll find the time after it blows out on the road. if its the return hose you might have hard start or other performance troubles. joemyers on 4 mar 2006 182439 -0800 randolfscott@hotmail.com wrote guys fuel leak between the starter and fuel/water separator on 98 12v motor. anyone know if this is a no-brainer ive washed the area with degreaser and rinsed and dried but havent started it yet to look/feel for the leak. waiting on some daylight so i do it right. if someone has had similar problem or can help me diagnose id be forever grateful. just dont have the time right now to go ripping the thing apart chasing a fuel leak. thanks randolf .
From : Annonymous
thanks for all the replies. i got out this morning and drove it hard and stopped after every few miles to look for leak but only thing i came across was a little film of diesel around where the fuel/water separator attaches to the mount guess its screwed on. how do i tighten it it was not enough diesel to suggest where all the diesel came from. saturday i found the starter drenched in diesel and it dripping from the bottom of the bell housing. this film was small in comparison. i will mention that before i degreased and cleaned the area saturday i cracked open the fuel/water separator and made darn skippy it was closed firmly. wonder if it hadnt cracked open under vibration and thats where all that diesel came from note i did inspect the rubber fuel lines that run around the area and they were never degreased/washed and have always been dry as a bone. it would suggest they havent rotted yet...but im no expert obviously. where is the fuel filter on my 12v inside the fuel/water separator thinking it might could use changing. randolf .
From : tom lawrence
where is the fuel filter on my 12v inside the fuel/water separator thinking it might could use changing. yep. how long has it been since you changed it anywhere between 10k and 15k is the usual interval. .
From : joe myers
if you cange it and havent done it before and it has the old style connector on the bottom of the filter can disconnect it first so you dont mess up the wires and when moving the probe plug to the new can be careful as it is plastic and although sturdy you can break it. clean the probe electrodes. oil o ring before screwing it back on. also oil the filter can gasketmake sure the old one is off. dont overtighten the new can. on mon 06 mar 2006 044614 gmt tom lawrence tnloaswpraemnmcien5g@earthlink.net wrote where is the fuel filter on my 12v inside the fuel/water separator thinking it might could use changing. yep. how long has it been since you changed it anywhere between 10k and 15k is the usual interval. .
From : Annonymous
you saying that they are also american companies on paper it may still be listed as a merger but in reality it was an admitted takeover simple as that. its demonstration of the autonomous nature of the chrysler division yet another bit of evidence that proves you incorrect in calling chrysler a german operation. no it demonstraited the ability of the person that they picked. if he could keep the chrysler division profitable while gm and ford took a dump he was the man for the job nothing more. obviously you forgot one important bit of info that makes my statement true. that is because there isnt one. deiter zeische operated without needing command from above; indeed operated better than jergen schremp who was his boss. the only way he could do this would be if chrysler was operated as an american company. complete bs. even in gm there were divisions that operated outside of the corporate requirements and demands especially during the muscle car era. are you saying that pontiac and olds were foreign manufacturers now lol! the next important bit of info you forgot is the reason daimler wanted to merge with chrysler they wanted an american company that had not only a decent market share larger than mercedes but had innovative ideas and design. chrysler had all that and has been urged to continue that. actually it was chryslers technology that they wanted and the market share smallest of the american manufacturers was just an added bonus. btw i dont recall mercedes being in financial trouble. do you know something different and if so please supply a link. that would be interesting. lol sorry maxi but just because you say it doesnt make it fact and as usual you jump into a thread with no actual valid information just to flame as usual. lol sorry if you cant take it when i join a thread at its inception with facts that trump your blather. if that were only true but as usual it isnt. hey if you feel the need to pump up your deflated ego go for it. the only problem is more times than not you just make yourself look like a fool. -- if at first you dont succeed youre not cut out for skydiving . 222 313946 1141669373.712197.302720@v46g2000cwv.googlegroups.com tom ive never changed the fuel filter on mine. i got it with 120k and now its at 170k. no fuel filter change. maybe its time i did inspect the rubber fuel line piece behind the filter and up against the block. it kinda looks like its in the process of cracking. when i drive to see daddy-in-law this weekend i will employ his help in replacing both the filer and that stupid rubber line. how do you tighten or remove the filter/fuel/water separator randolf .
From : lorne
there are two lines there - supply and return. lorne tom ive never changed the fuel filter on mine. i got it with 120k and now its at 170k. no fuel filter change. maybe its time i did inspect the rubber fuel line piece behind the filter and up against the block. it kinda looks like its in the process of cracking. when i drive to see daddy-in-law this weekend i will employ his help in replacing both the filer and that stupid rubber line. how do you tighten or remove the filter/fuel/water separator randolf .