Diesel Questions/Problems in General (non specific makes)

146 messages, Last post on Nov 04, 2009 at 5:28 PM

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What is this discussion about? Engine, Exhaust, Diesel, Hatchback, Truck, Sedan, Wagon

This topic is for diesel car and truck owners who have not been able to find satisfactory information in the forums dealing with their particular vehicles (please use SEARCH on left of page before you post here).

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#87 of 146 03 Dmax problem by arizona3 Dec 03, 2007 (7:07 pm)
Was pulling 12,000lbs trailer up a hill truck would down shift but would lose power until about 40 mph then would pick up speed again. Did that once then went into limp mode would not go over 25mph and check engine light came on. Turned off truck restarted ran fine but light was still on only for a few days then turned off. Once home hooked up code reader and came up low fuel rail pressure reset code then a day later truck stopped running going down the road and would not restart I replaced the fuel filter right there primed the system and it started right up. Have hooked the reader up to it to see what codes and there are no codes. Do you think it was just a filter problem or do I have an injector going out ? Replies to this message: Mr_Shiftright (Dec 03, 2007 7:25 pm) cayadopi (Dec 10, 2007 1:17 am)
#88 of 146 Re: 03 Dmax problem [arizona3] by Mr_Shiftright HOST Dec 03, 2007 (7:25 pm)
Replying to: arizona3 (Dec 03, 2007 7:07 pm) Clogged filters are the bane of diesel engines, so you might have gotten it. A poor spray pattern will cause loss of power and drop in fuel economy. I don' t think it would trigger that code though, since pressure would be good even to a bad injector.
#89 of 146 Re: 1990 7.3 international diesel is very hard to get started [cayadopi] by 0patience Dec 06, 2007 (6:04 pm)
Replying to: cayadopi (Nov 24, 2007 7:32 am) Agree with Mr Shiftright. (again) More than likely, there are 1 or 2 glow plugs that are shot. Pretty common. I will say this. If you are strapped for cash, you can locate bad glow plugs with a test light or ohm meter. There is a way to do it. But honestly, I would replace all 8. They are about $8 each, depending on where you get them. The rubber hoses that go to the injectors are the return hoses and over time crack and leak. When you replace the rubber hoses, also replace the o-rings on the caps that the hoses attach to. Contact your Ford dealer and they have a kit with the hoses and o-rings for about $23. Replies to this message: orchiddj (Dec 07, 2007 4:35 am) cayadopi (Dec 10, 2007 1:20 am)
#90 of 146 Re: 1990 7.3 international diesel is very hard to get started [0patience] by orchiddj Dec 07, 2007 (4:35 am)
Replying to: 0patience (Dec 06, 2007 6:04 pm) Hi and thanks to all whom posted. As stated this truck is only used occasionally so as long as I could get it started and with limited time it took me a while to get into checking things out. I found a very very small fuel leak. Replaced fuel hose and it starts instantly now. Again thanks to all who posted. Jim
#91 of 146 Re: 1990 7.3 international diesel is very hard to get started [Mr_Shiftright] by cayadopi Dec 10, 2007 (12:58 am)
Replying to: Mr_Shiftright (Nov 24, 2007 10:02 am) All fuel hoses - done check. First time in a long time haven't smelled diesel. Glow plugs next. Just the plugs or is there anything else that needs to be replaced at the same time? I saw something about electrical wires somewhere, but wasn't sure if the wires get replaced or if the wires just hook up to the glow plugs. My dad is a mechanical engineer and would like to replace these for me, but he's not a diesel mechanic (but otherwise very much a mechanic and trouble shooter). Is this fairly easy for someone who hasn't done this before? Replies to this message: 0patience (Dec 15, 2007 9:56 am) cayadopi (Dec 16, 2007 5:44 am)
#92 of 146 Re: Jelly gunk in fuel tanks - lady needs advice [Mr_Shiftright] by cayadopi Dec 10, 2007 (1:08 am)
Replying to: Mr_Shiftright (Nov 24, 2007 10:00 am) Algae - that's what it probably is. The algae gunk starts to get sucked up into the fuel lines at about 1/4 tank. That sounds like too much to kill and then try to suck dead algae up thru the lines/filters to get it out, right? I do change the fuel filter every other oil change, unless I accidently get some of that stuff sucked up into the filter, then I change it as soon as possible. This is the fuel filter / water separator. You stated "filters". Is there more than one filter that I need to track down? Ford quoted me $599 to drop and clean the fuel tanks. That seems a bit high. Is this a difficult job and can any mechanic pretyy much do this? The mechanic I've been using has been good so far. Replies to this message: Mr_Shiftright (Dec 10, 2007 9:08 am)
#93 of 146 Re: 03 Dmax problem [arizona3] by cayadopi Dec 10, 2007 (1:17 am)
Replying to: arizona3 (Dec 03, 2007 7:07 pm) The same thing happened to me. I was pulling the 12k trailer up a hill, truck downshifted, lost power to 45 mph, and didn't resume power until I got over the hill. But - the next week is when multiple fuel leaks were found. Wound up replacing all the rubber return lines, parts in the fuel filter/water seperator (leaking bad). Once those were fixed, the next weak link went, the fuel pump. Sometime before the end of the month will be tackling that big hill again and see if I lose power down to 45 mph. Long ago, I used to pull a heavy horse trailer (fully loaded about 10k), and didn't lose power, although it would downshift. Will try to remember to post the results of going over the hill the next time... I'm going to guess if no power loss, fixing all the fuel leaks did the trick. From my guess, the fuel filter/water seperator & fuel pump were the culprits (as opposed to the rubber hoses - part of the return system) --- or maybe all of them together.
#94 of 146 Re: 1990 7.3 international diesel is very hard to get started [0patience] by cayadopi Dec 10, 2007 (1:20 am)
Replying to: 0patience (Dec 06, 2007 6:04 pm) Dang,,,,, I don't know if the mechanic replaced the o-rings... Will have to go there and ask him. Thanks for all the great stuff guys!!
#95 of 146 Re: Jelly gunk in fuel tanks - lady needs advice [cayadopi] by Mr_Shiftright HOST Dec 10, 2007 (9:08 am)
Replying to: cayadopi (Dec 10, 2007 1:08 am) Some diesels have a primary and secondary filter. I don't know about yours though.
#96 of 146 Re: 1990 7.3 international diesel is very hard to get started [cayadopi] by 0patience Dec 15, 2007 (9:56 am)
Replying to: cayadopi (Dec 10, 2007 12:58 am) The glow plugs are like spark plugs. A 10mm deep socket and extension (I prefer an extenstion with a wobbly tip) will be needed. And a pair of needle nose vise grips for teh glow plugs that are a little stubborn coming out. The 2 center ones on each side are a it of a bear, you may need to unbolt the clamp that hoses the injector lines together to get the socket and extension in there. Some of the blow plugs may be swelled and a little hard to get them to come out. Use the needle nose vice grips to gently work them out of the hole. DO NOT force them to hard, as you can break the tip off and that wouldn't be good. Put a small dab of never sieze on the threads before installing them. Replies to this message: cayadopi (Dec 16, 2007 5:44 am)