Results 1 to 14 of 14

Thread: Weird Tin Can Noise when Accelerating at low Soeeds?

  1. #1

    Array
    Status
    Offline
    Join Date
    02-02-2017
    Posts
    20
    Location

    Louisville KY
    Vehicle

    1987 Mitsubishi Mighty Max
    Engine

    G54B

    Weird Tin Can Noise when Accelerating at low Soeeds?

    Hey guys, My truck is making a very odd sound. When my truck is accelerating directly after a gear change when a load is applied I get a really odd tin can retelling noise. Sounds like someone is shakng a bag of soup cans together. This comes out as soon as I pull off the cutch to let the gear pull. It can also be heard if I rev the engine at idle. At the low rpm range the rattle persists. Also seems to have slightly less pulling power in the gears. Also noticed that my temp guage has gotten a little warmer than it usually is. I was thinking something might be stuck in the Converter (if these trucks have them) or exhaust in general.

    Thanks,

  2. #2

    Array
    Status
    Offline
    Join Date
    02-02-2017
    Posts
    20
    Location

    Louisville KY
    Vehicle

    1987 Mitsubishi Mighty Max
    Engine

    G54B
    *ratteling

  3. #3

    Array
    Status
    Offline
    Join Date
    12-21-2013
    Posts
    1,029
    Location

    Maurertown, Virginia
    Vehicle

    1990 Dodge D-50
    Engine

    4G64
    Hey jduvall24 ~

    "Simple" is the best place to start. Since the rattling sounds like a tin can, check the things that are tin-cannish - like the heat shroud on the exhaust, on the fire wall, and at the cat converter (yes, they have them). Take the time to just inspect with eyes-and-hands anything that might be loose. See what you come up with. Be sure to inspect the exhaust system, all the way to the tailpipe, to see if anything's loose.

    If it's none of those things, then we can go to the next step...which Geezer is likely to suggest
    The greatest gift you have to give to the world is that of your own self~transformation.

  4. #4

    Array
    Status
    Offline
    Join Date
    02-02-2017
    Posts
    20
    Location

    Louisville KY
    Vehicle

    1987 Mitsubishi Mighty Max
    Engine

    G54B
    Would a clogged cat make the engine run a little warmer, and with less power/ responsiveness?

  5. #5

    Array
    Status
    Offline
    Join Date
    12-21-2013
    Posts
    1,029
    Location

    Maurertown, Virginia
    Vehicle

    1990 Dodge D-50
    Engine

    4G64
    I'm not knowledgeable about cat converters, but from what I've read, yes. Again, Geezer is the guy with those kind of answers. We really appreciate him here
    The greatest gift you have to give to the world is that of your own self~transformation.

  6. #6

    Array
    Status
    Offline
    Join Date
    06-15-2014
    Posts
    2,126
    Location

    Adelaide, South Australia
    Vehicle

    1985 Mitsubishi L200
    Engine

    G63B
    Quote Originally Posted by royster View Post
    I'm not knowledgeable about cat converters, but from what I've read, yes. Again, Geezer is the guy with those kind of answers. We really appreciate him here
    Thanks for the kudos but unless I've got my head in the engine bay I'll only be doing what everyone else is doing - guessing. When you say loss of power do you mean you still have engine RPM but it's not making the same acceleration? I wouldn't think it's the gearbox BUT if the clutch plate centre damper has gone into full fail mode they can make some scary noises (they "clatter" when the clutch is being disengaged) You may need a second person to pin point the location of the rattle (under the tray, the cab, engine bay). It could be the exhaust (broken hanger/mount, baffle in the muffler has let go...) the front splash tray is loose (the metal shroud bellow the radiator) A blocked cat converter will definitely nerf an engine but normally there isn't an obvious noise to give it away. Let us know how you go on this one.

  7. #7

    Array
    Status
    Offline
    Join Date
    02-02-2017
    Posts
    20
    Location

    Louisville KY
    Vehicle

    1987 Mitsubishi Mighty Max
    Engine

    G54B
    Still trying to find the problem, got underneath the car, the catylic converter had already been eliminated, checked back pressure, pumping plenty of exhaust, pipes are clear. I think my problem is somehow in my carb. I have a webber carb. When I mesh on the gas out of gear, at the very beginning when the rpms rise from idle it hesitates makes the tin can sound and then revs like normal. This situation is prolonged under load while in gear... RPMS's still we rise but its like at the very beginning of rising from idle they hesitate and create that sound.

  8. #8

    Array
    Status
    Offline
    Join Date
    12-21-2013
    Posts
    1,029
    Location

    Maurertown, Virginia
    Vehicle

    1990 Dodge D-50
    Engine

    4G64
    Have you checked for vacuum leaks? That sort of sounds like a contributing factor. I'm not a carburetor expert, by any means, but I do know the symptoms of a vacuum leak. And I am unfamiliar with a G54B, but if it has an EGR, it might be good to see if it's plugged up or not. The timing could be an issue, too.

    Just my two cents.
    The greatest gift you have to give to the world is that of your own self~transformation.

  9. #9

    Array
    Status
    Offline
    Join Date
    02-02-2017
    Posts
    20
    Location

    Louisville KY
    Vehicle

    1987 Mitsubishi Mighty Max
    Engine

    G54B
    The EGR IS taped off since it is an aftermarket carb, however, its never done this before and I haven't changed anything regarding the EGR Valve. At this point I am almost thinking that I have a valve or lifter stuck...

  10. #10

    Array
    Status
    Offline
    Join Date
    06-15-2014
    Posts
    2,126
    Location

    Adelaide, South Australia
    Vehicle

    1985 Mitsubishi L200
    Engine

    G63B
    A gummed up lifter would normally make that noise all the time. I would also think if you have a faulty jet valve the problem would be constant as well. If the valve train sounds like an old typewriter try following my engine flush procedure. It will either eliminate or greatly reduce noisy lifters and restore valve lift (gummed lifters will actually affect engine performance) -

    http://www.mightyram50.net/vbulletin...ll=1#post49688

  11. #11

    Array
    Status
    Offline
    Join Date
    02-02-2017
    Posts
    20
    Location

    Louisville KY
    Vehicle

    1987 Mitsubishi Mighty Max
    Engine

    G54B
    I think that's what I got going on, It sounds like that all the time just can hear it most easily at low speeds and RPM's. Will the driving all day on 2 quarts of oil and 0.5 of diesel in the oil hurt the engine. Just seems kind of low on the oil in my opinion, I don't know what engine you were referring to in this because I think my engine takes 5 quarts.

  12. #12

    Array
    Status
    Offline
    Join Date
    02-02-2017
    Posts
    20
    Location

    Louisville KY
    Vehicle

    1987 Mitsubishi Mighty Max
    Engine

    G54B
    or 4.2 Liters I believe

  13. #13



    Array
    Status
    Offline
    Join Date
    03-16-2011
    Posts
    3,608
    Location

    Sacramento, CA
    Vehicle

    1979 Dodge D-50
    Engine

    Chevy V6
    Quote Originally Posted by jduvall24 View Post
    Would a clogged cat make the engine run a little warmer, and with less power/ responsiveness?

    yes or a broken cat
    Members come and members go, But the board keeps track of them.
    Check out the Fear Monger by
    clicking HERE.

    The MightyRam50 site is sponsored in part by On Site Concrete Inc.

  14. #14

    Array
    Status
    Offline
    Join Date
    06-15-2014
    Posts
    2,126
    Location

    Adelaide, South Australia
    Vehicle

    1985 Mitsubishi L200
    Engine

    G63B
    Quote Originally Posted by jduvall24 View Post
    I think that's what I got going on, It sounds like that all the time just can hear it most easily at low speeds and RPM's. Will the driving all day on 2 quarts of oil and 0.5 of diesel in the oil hurt the engine. Just seems kind of low on the oil in my opinion, I don't know what engine you were referring to in this because I think my engine takes 5 quarts.
    The procedure was for most Mitsubishi engines but for the flush segment of the oil change it is not necessary to run a full sump before the actual fresh oil change. One member even used my method on their Dakota 3.9 and it silenced their lifter issue and improved it's overall running. The off the shelf engine flush is diesel fuel - the retailers gouge you for the privilege of putting it in a 250ml bottle (there might be a small amount of extra detergent in some brands). IMO the small amount you get in a pre packed product isn't sufficient enough to flush an engine adequately and for what you get, it is really over priced. I have been doing this flush for some time and I can guarantee it will not damage your engine under normal everyday circumstances. If you are concerned the flush level is low, add an extra 0.5 L of oil to be safe

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •