Question about 1990 Mitsubishi Mighty Max

1 Answer

My 1990 mighty max is leaking gas out of one of the steel lines from the fuel sending unit on top of the gas tank. where can i get a new fuel sending unit or what should i do?

My truck also started to act like it didnt have power and ran weird would this gas leak be the problem?

Posted by on

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that got 5 achievements.

    Night Owl:

    An expert who has answered 10 or more questions between 12 midnight and 6am on the same day.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Contributor
  • 37 Answers

Yes it is more than likely the hole problem. haha. but yes it can be fixed . If you can take the tank down one way to fix the leak is to wash it down with soapy water to get rid of any gas fumes, including inside the lines. Check the entire tube for holes on either side ,if the unit is badly rusted its not worth fixing, if not, sand leaking area down with plumbers tape and if you can solder water pipes then simply solder it. re -install unit . However if you cant or would not rather solder it a new one can be purchased at your local parts store in many cases or definately the dealership at the cost of a couple hundred dollars. Personally, I solder many of these as well as fuel tanks at less than a fourth the cost. Make sure you blow compressed air through the liner on the unit and filter sack to get rid of unwanted water.

Posted on Apr 18, 2013

  • cody Apr 18, 2013

    I have the tank already off thats how i know there is a hole in it. im pretty sure the hole is on one of the lines itself or where it goes threw the fuel sending unit. so i can soder on the tank and fuel line? also i have been looking for the past two hours for a fuel sending unit and haven't been able to find the right one yet.

×

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 39 Answers

SOURCE: wheres the fuel filter on my 1987 mitsubishi mighty max

Hi Paulvilla13,

I'm not sure if your '87 is the same as my '88 or not, but mine is located just in front of the tank. I also have to remove the rear driver-side wheel to get at it.

Hope I've helped, don't forget to rate.

Lazaruselite

Posted on Feb 24, 2009

  • 523 Answers

SOURCE: I have a 1987 mighty max truck that has been

I expect the carb has become heavily fouled, old gas will quickly gum things up. I'd drain the tank, add new fuel and rebuild the carb. Also insure you have fuel to the carb (possible failed fuel pump)

If I may help further, please let me know,
Tom

Posted on Apr 17, 2010

  • 2309 Answers

SOURCE: 1991 Mitsubishi Mighty Max 2D 4X4 V6 3.0L No Start.

you can get pressure specs from your local parts dept, and check injector signal with a noid light

Posted on Apr 23, 2010

  • 523 Answers

SOURCE: No Fuel??? Not starting.

You have fuel flow but the question now is are the injectors pulsing. Given the year of the truck my gut says your ECU, Engine Control Unit, has failed. Mitsubishi had issues with the capacitors in their early 90's cars, trucks SUVs. I have been thru this with two monteros and one 3000GT, very common. To check your injectors rent a set of NOID lites from Autozone our such. Remove an injector plug and itstall a noid light. Turn the engine over, if no flash, no pulse. Remove the ECU and carefully open it up. Look for the capacitors, there should be 3, look under the capacitors on the board; if there is a grease like substance, often time it has a green hew to it, then the capacitor(s) have failed. It may be possible to replace the capacitors or simply purchase a rebuilt ECU. Be ceratin the MD number matches on the new unit.
Please let me know your results and if this had assisted you.
Thanks, Tom

Posted on Apr 25, 2010

Testimonial: "Thanks! I will try your ideas and get back to you shortly!!!"

  • 2 Answers

SOURCE: I can't find the fuel filter on my pickup truck

Here's what answers.com has to say; In front of the fuel tank. You will likely have to remove the rear driver side wheel to get to it.
On mine it's in front of the rear drivers side wheel and it's tucked in there pretty high. There should be 2 lines going into the top of it.

Posted on May 05, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

GAS RUNS DOWN FUEL LINES FROM TOP OF GAS TANK


sounds like sending unit gasket is leaking. drop the gas tank...sorry

Aug 20, 2012 | 1995 Buick LeSabre

2 Answers

My gas Gage does not work


Could be the gauge on the dash or the sending unit in the tank.

Jul 06, 2012 | 1997 GMC Sonoma

1 Answer

Where is the fuel filter on 1993 mighty max


The fuel pump is located in the fuel tank, and part of the Pick-up/Sending unit.

Jan 21, 2012 | 1993 Mitsubishi Mighty Max

2 Answers

Dropped tank and reinstalled and now not getting fuel to carb. relay,pump,filter...???


sounds like your fuel filter is plugged the fuel pump is finished or you have a plugged fuel return line.

Dec 08, 2011 | 1988 Mitsubishi Mighty Max

2 Answers

I can't find the fuel filter on my pickup truck


Here's what answers.com has to say; In front of the fuel tank. You will likely have to remove the rear driver side wheel to get to it.
On mine it's in front of the rear drivers side wheel and it's tucked in there pretty high. There should be 2 lines going into the top of it.

Apr 07, 2010 | 1989 Mitsubishi Mighty Max

2 Answers

Engine not starting turns over good, clean out gas tank and replace fuel filter and blew out the lines and have power to the plugs


Do you have pulse to the fuel injectors? The besy way to test is with a set of NOID lites; these can be rented at many places like AutoZone for little or no cost. Unplug a fuel injector and plug in a noid light; if there is no flash you know you have minimized your search. My gut feel is your trucks ECU (Engine Control Unit) these units from early 90's Mitsubishi have big isses with the capacitors leaking (a matter of when not if). I fully expect you'll need to replace the ECU (the NOID lites will confirm this) when changing the ECU you want to identify it by the MD number on it, this it what you'll need to order a new one. I have had two Montero's and now my son's 3000GT all of whichhad their ECU's fail.
This issue can effect either spark or injector pulse.
Please see attached link for further info:

http://en.allexperts.com/q/Mitsubishi-Repair-824/Galant-spark.htm

I hope this may have helped,
Tom

Oct 25, 2009 | 1990 Mitsubishi Mighty Max

2 Answers

Fuel leaking from top of gas tank


sounds like you are going to have to drop the tank out to inspect and fix. with luck it will be leaking from the fuel pump seal or the return line.
Bad luck would be if the tank is rusted out and needs to be replaced.
Syphon as much gas out of the tank as you can before you drop it , gas is heavy.

May 08, 2009 | 1991 Toyota Pickup

4 Answers

Location of fuel pump,1987 Mitsubishi Mighty Max,2.0 2wd


the mecanical fuel pump for a 87 2.0 mitsubishi is located in the middle of the intake manifold.

Jan 17, 2009 | 1989 Mitsubishi Mighty Max

1 Answer

Fuel lines


you can buy a repair steel line that is taperd on one end you can cut your old line off flush then insert new replacement in the hole then put jbweld on the connection which will seal up the seam then put rubber fuel line to connect the new line to old line

Dec 31, 2008 | 1990 Geo Prizm

1 Answer

95 Mighty Max has been sitting for one year


Unfortunately if all you did was dilute the stale fuel you will have to remove the entire fuel system and clean/replace.Stale (old)fuel becomes acidic and works like an acid.If you remove the fuel system yourself avoid getting it on your skin as it burns(personal experience)At least its not an ignition fault as the engine wants to run with an independant supply of fuel(start fluid)Sorry cant supply cheap alternative but there you are Good luck and let me know how you go with it.

Nov 12, 2008 | 1990 Mitsubishi Mighty Max

Not finding what you are looking for?
1990 Mitsubishi Mighty Max Logo

96 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mitsubishi Experts

yadayada
yadayada

Level 3 Expert

76846 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8572 Answers

Are you a Mitsubishi Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...