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Fuel filter problem #1063423
08/29/13 08:18 AM
08/29/13 08:18 AM
Rocker  Offline OP
Need a Spot
Joined: Aug 2013
Posts: 11
Khon Kaen, Thailand
Hi, all! This is my first post under the 'new' forums. Great to be back (been away for quite a while). I have a 2000 Strada 4x4 Megacab with the 2800cc diesel engine. I've got two or three problems I'm hoping someone will be kind enough to help with.

1. A few months ago, my truck wouldn't start, and it turned out that a few pumps on the plunger-type mechanism on the top of the cannister-type fuel filter solved the problem...for the moment. A few days later, it happened again. I had the filter replaced, and then if the truck sat for more than overnight, it would start right up the next day, then stall after a moment, starving for fuel. Pump the plunger, crank for a few seconds, and it would start again. Occasionally it happened several times in a row, but once the truck had been running for a few moments, it ran fine, and on the street it was OK. I had the filter replaced again (with a genuine Mitsu filter this time,) and it seems OK, but then the other day it happened again. Could the problem be something other than the filter/plunger mechanism? Could there be air in the lines, or sediment/crap somewhere else?

2. The passenger-window 'down' button on the driver's door control switch assembly broke. I can put the window up from the passenger's door, but I must use a key as a lever on the switch in the driver's door unit to get the switch to put it down, and now that's not doing it either. Is there a way to 'jump out' the driver's side control, so that the passenger's switch operates it independently? The switch-block assembly under the driver's side armrest has a multi-wire plug on it, and I was thinking if I could just jump across a couple of them, it may be able to cut-out the driver's side control.

3. The horn is out. Can anyone tell me which fuse is the horn fuse? I see the fuse box under the hood, but the labeling is all worn off, and all the ones I've checked look OK.

There's a few more little things but I'll leave them for another post.

Thanks in advance.


Life is strange.....and then there's Thailand...
Re: Fuel filter problem [Re: Rocker] #1063424
08/30/13 04:33 AM
08/30/13 04:33 AM
TOASTY  Offline
Trail Leader
Joined: Jan 2002
Posts: 6,127
Mesa AZ, US. *****
Sounds like air in the lines to me, maybe you have a leak somewhere allowing the fuel to return to the tank when it's off.

Welcome to the wire


1999 Montero Blizzard package

1991 Montero RS
Re: Fuel filter problem [Re: TOASTY] #1063425
08/31/13 02:17 AM
08/31/13 02:17 AM
lordtrunks  Offline
Roll Me Over
Joined: May 2001
Posts: 4,078
Apache Jct, Arizona,USA *****
what your facing is a common problem with the 4m40 which is the front injection pump seal leaking diesel you can't see it leaking because its leaking into the oil you need to pull the pump and either change the seal your self or take it to a shop and have the seal replaced you can either have them do a full seal job or just the front seal which is the problem most of the time. When it gets really bad you will have to wait til the engine is warmed up or it will begin to stall and not wanna start untill cranking on it serveral times. best to get it done soon as possible the diesel getting in your oil will cause other problems.

Mitzybitz.com sells the front seals and they come with a instruction set to show you how to change it out i bought one i don't need it yet i bought it just to have it when it does go.

If you have a bad window switch i'd check local wreckers or even ebay and see if you can find a replacement, if you can't find the electric switches but find alot of trucks with matching interior maybe just get all the bits together and switch it over to manual crank windows most of the doors have the holes already drilled from the factory and switching over is pretty easy. doing bypass wiring leads to problems like melted wiring harnesses.


89 2 dr turbo diesel
89/88 "Backwoods sas"
Re: Fuel filter problem [Re: lordtrunks] #1063426
08/31/13 03:45 AM
08/31/13 03:45 AM
Rocker  Offline OP
Need a Spot
Joined: Aug 2013
Posts: 11
Khon Kaen, Thailand
Lordtrunks, Wow! Thank you for the info. I am from Pittsburgh, but I live and work here in Thailand. There are no junkyards open to the public here that I've ever seen, especially up here in Khon Kaen (about the 4th largest city, in the NE part of the country). It's not like back home.

1. The info about the front injector pump sounds like it could be the problem, and I greatly appreciate you taking the time to explain it for me. I hate to take my truck to any of the shops here. The mechanics are not well trained at all, they do not know how to analyze a problem systematically. That's why this problem has gone unnoticed, and the attempted fix of replacing the fuel-filter is all they could come up with. One 'mechanic' suggested to me (after the second filter was replaced) that perhaps it's a problem with my valves....<img src="/forums/images/graemlins/confused.gif" alt="" />


2. The switch unit is about $170 (equivalent), and I just don't have it, that's why I thought of doing it myself if possible by just jumping some wires, but I lack a wiring diagram.


Life is strange.....and then there's Thailand...
Re: Fuel filter problem [Re: Rocker] #1063427
08/31/13 05:51 AM
08/31/13 05:51 AM
plh  Offline
Body Damage is Cool
Joined: Nov 2008
Posts: 1,422
Milwaukee Wisconsin
Quote
Lordtrunks, Wow! Thank you for the info. I am from Pittsburgh, but I live and work here in Thailand. There are no junkyards open to the public here that I've ever seen, especially up here in Khon Kaen (about the 4th largest city, in the NE part of the country). It's not like back home.

1. The info about the front injector pump sounds like it could be the problem, and I greatly appreciate you taking the time to explain it for me. I hate to take my truck to any of the shops here. The mechanics are not well trained at all, they do not know how to analyze a problem systematically. That's why this problem has gone unnoticed, and the attempted fix of replacing the fuel-filter is all they could come up with. One 'mechanic' suggested to me (after the second filter was replaced) that perhaps it's a problem with my valves....<img src="/forums/images/graemlins/confused.gif" alt="" />


2. The switch unit is about $170 (equivalent), and I just don't have it, that's why I thought of doing it myself if possible by just jumping some wires, but I lack a wiring diagram.


Get to Bangkok. I was in 3 different major recycle "malls" LAST WEEK. You will need to search a little, but I found everything I was looking for. Gen 1 & 2 and Diesel Pickup (especially pickups!) parts are a plenty in Thailand. Check in order: "Bang Na" area. Near MBK and about 45 minutes out past the old airport. Sorry I can't give more specifics, friend was driving.


  • 88 Raider: 5 spd, 4.62 LSD F & R, T/L, OME Rear Springs, KYB G/A, 33/12.5/15" MTZs, PLH LOs, Justice Bumper, Dual Bouncies, 4D56T in -running soon!
  • 1992 RS M/T
  • 1993 SR
  • 2005 Montero LTD
  • Gen 1 - PARTS FOR SALE
  • http://www.tuffpans.com
Re: Fuel filter problem [Re: plh] #1063428
09/01/13 04:09 AM
09/01/13 04:09 AM
Rocker  Offline OP
Need a Spot
Joined: Aug 2013
Posts: 11
Khon Kaen, Thailand
Lordtrunks,
Are you talking about the 'O'-ring seal that is between the injector pump and the body of the engine? I brought up an exploded view of the engine and assemblies, (http://free-mitsubishi-manuals.blogspot.com/2011/05/mitsubishi-4m40-engine-workshop-service.html) and it shows this pump with such an 'O'-ring. I'm not sure I can do the repair myself, it looks a little detailed and I have no tools except for a basic (and cheap) socket set, some wrenches, and misc handtools. (Tools sold here are made in Taiwan, China, Indonesia, the Phillipines etc and are basically junk. Quality tools from the states or Germany are way out of my price range due to import duties and taxes).
Also, I'm hoping the engine hasn't been changed much since 2000 (my year) to this one in the manual. I'm going to print this manual, it may come in handy in future, but for now I'm dreading the prospect of spending the money and facing the uncertainty of having it serviced by a local Mitsu dealer. But thanks again for your info. At least when I go into the shop I can tell them 'just do this' and hopefully it will be done in a manner approaching correctly.



plh,

Thanks for the info. When I lived in BKK, (for about 7 years) I never needed to check into a part from a junkyard, hence I had no knowledge of where they might be. I'd like to get back down there, but the problem is one of time and $. I've got to get this fuel-pump fixed first, then maybe I can drive down there. I haven't been back there in almost 4 years, I luckily moved up here about a year before the big flood of several years ago. But thanks for the tips.
BTW, I saw your post about having been in BKK for a week, and wondered where you'd found the yards. Glad to know there's some there. <img src="/forums/images/graemlins/kewl.gif" alt="" />

Last edited by Rocker; 09/01/13 04:36 AM.
Re: Fuel filter problem [Re: Rocker] #1063429
09/04/13 06:47 PM
09/04/13 06:47 PM
plh  Offline
Body Damage is Cool
Joined: Nov 2008
Posts: 1,422
Milwaukee Wisconsin
Quote

plh,
Thanks for the info. When I lived in BKK, (for about 7 years) I never needed to check into a part from a junkyard, hence I had no knowledge of where they might be. I'd like to get back down there, but the problem is one of time and $. I've got to get this fuel-pump fixed first, then maybe I can drive down there. I haven't been back there in almost 4 years, I luckily moved up here about a year before the big flood of several years ago. But thanks for the tips.
BTW, I saw your post about having been in BKK for a week, and wondered where you'd found the yards. Glad to know there's some there. <img src="/forums/images/graemlins/kewl.gif" alt="" />


Pretty easy to find. Google: "Siang Gong" or "Chieng Kong" - Thai or Chinese Thai words for auto recyclers.


  • 88 Raider: 5 spd, 4.62 LSD F & R, T/L, OME Rear Springs, KYB G/A, 33/12.5/15" MTZs, PLH LOs, Justice Bumper, Dual Bouncies, 4D56T in -running soon!
  • 1992 RS M/T
  • 1993 SR
  • 2005 Montero LTD
  • Gen 1 - PARTS FOR SALE
  • http://www.tuffpans.com
Re: Fuel filter problem [Re: plh] #1063430
09/11/13 06:23 AM
09/11/13 06:23 AM
lordtrunks  Offline
Roll Me Over
Joined: May 2001
Posts: 4,078
Apache Jct, Arizona,USA *****
the seal i'm talking about is on the nose of the injection pump.

http://www.ebay.com/itm/PAJERO-SHOGUN-L2...=item58926c23a8


89 2 dr turbo diesel
89/88 "Backwoods sas"
Re: Fuel filter problem [Re: lordtrunks] #1063431
04/24/14 08:53 AM
04/24/14 08:53 AM
Rocker  Offline OP
Need a Spot
Joined: Aug 2013
Posts: 11
Khon Kaen, Thailand
Sorry...I posted this before I noticed your link to the pic of the injector-pump seal. I still haven't gotten it fixed due to low finances but I was planning on doing it at the end of this month (hopefully...the wife's selling some cassava crop, and we'll be flush for a week or two.

Thanks for taking the time to post the pic.

Attached Files
Last edited by Rocker; 04/24/14 09:00 AM.
Re: Fuel filter problem [Re: Rocker] #1063432
04/25/14 04:33 AM
04/25/14 04:33 AM
LandRaider  Offline
Forum Moderator
Joined: Sep 2001
Posts: 8,557
Ocean Springs, MS *****
Rocker Would you please take a bunch of pictures for us. We would absolutely LOVE to see the scenery there. Countryside, cities, street food vendors, vehicles, Mitsubishis, etc! I'd seriously enjoy seeing it all.


87 Raider 4D56td v5MT1
31's..Basically Stock
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