help!! I-6 oil problem
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Joined: Feb 2010
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help!! I-6 oil problem
HELP!!!!
there's a blizzard forecasted 4 days from now, and suddenly my plow truck (combination of an 82 f-100, an 86 f-250, and an 89 f-150 put together) started knocking really bad. the engine is out of a 86 f-250 and its the 300 six cylinder. the engine started tapping at first while driving, then i pulled over and it started knocking really bad. i assumed it was low on oil so i added some oil and attemped to start it again. it kept knocking just as loud. keep in mind that the whole time this was happening the oil pressure gauge read normal pressure. it sounded like either a rod or crank bearing had gone bad, and it was running rough and lost alot of power as i was attempting to get it off the roadway. so now i'm thinking of where i'll find another bottom end and have it in the truck within 4 days. i had my brother drive me home and get my other truck... when i came back to the plow truck to get some stuff out of it i started it back up to see if it still knocked. to my surprise it didn't? it ran just fine and didn't knock a bit. i thought for sure that i had spun or lost a bearing before but now i'm not sure. i tried to drive the truck home but notice the faint knock slowly coming back so i cut it back off and left it for the night.
has anyone ever had this problem before? the engine only has 100k on it. i think i'm just gonna take the pan off tomorrow and replace the oil pump and screen. would that just be a waste of money? could a bearing still be bad? i'm trying to get the truck running again before the snow gets here. if anyone has any input please help me i'm running out of time!!
there's a blizzard forecasted 4 days from now, and suddenly my plow truck (combination of an 82 f-100, an 86 f-250, and an 89 f-150 put together) started knocking really bad. the engine is out of a 86 f-250 and its the 300 six cylinder. the engine started tapping at first while driving, then i pulled over and it started knocking really bad. i assumed it was low on oil so i added some oil and attemped to start it again. it kept knocking just as loud. keep in mind that the whole time this was happening the oil pressure gauge read normal pressure. it sounded like either a rod or crank bearing had gone bad, and it was running rough and lost alot of power as i was attempting to get it off the roadway. so now i'm thinking of where i'll find another bottom end and have it in the truck within 4 days. i had my brother drive me home and get my other truck... when i came back to the plow truck to get some stuff out of it i started it back up to see if it still knocked. to my surprise it didn't? it ran just fine and didn't knock a bit. i thought for sure that i had spun or lost a bearing before but now i'm not sure. i tried to drive the truck home but notice the faint knock slowly coming back so i cut it back off and left it for the night.
has anyone ever had this problem before? the engine only has 100k on it. i think i'm just gonna take the pan off tomorrow and replace the oil pump and screen. would that just be a waste of money? could a bearing still be bad? i'm trying to get the truck running again before the snow gets here. if anyone has any input please help me i'm running out of time!!
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
You've never, in fact, verified anything, and you're now wanting to spend time and
money replacing parts when you have no idea if they need replacing or not. There are a
variety of things that can be causing your noise, some not even engine-related; my best
suggestion is to take it to a professional mechanic and have it diagnosed. If this is a work
truck and part of your revenue stream, you will have much greater and faster success going
that route than trying to ask the Internet for help via text-based descriptions.
money replacing parts when you have no idea if they need replacing or not. There are a
variety of things that can be causing your noise, some not even engine-related; my best
suggestion is to take it to a professional mechanic and have it diagnosed. If this is a work
truck and part of your revenue stream, you will have much greater and faster success going
that route than trying to ask the Internet for help via text-based descriptions.
Elder User
Joined: Mar 2008
Posts: 509
Likes: 0
From: Central Florida
You've never, in fact, verified anything, and you're now wanting to spend time and
money replacing parts when you have no idea if they need replacing or not. There are a
variety of things that can be causing your noise, some not even engine-related; my best
suggestion is to take it to a professional mechanic and have it diagnosed. If this is a work
truck and part of your revenue stream, you will have much greater and faster success going
that route than trying to ask the Internet for help via text-based descriptions.
money replacing parts when you have no idea if they need replacing or not. There are a
variety of things that can be causing your noise, some not even engine-related; my best
suggestion is to take it to a professional mechanic and have it diagnosed. If this is a work
truck and part of your revenue stream, you will have much greater and faster success going
that route than trying to ask the Internet for help via text-based descriptions.
Fleet Mechanic
Joined: Apr 2007
Posts: 1,429
Likes: 4
From: patricia ab canada
You've never, in fact, verified anything, and you're now wanting to spend time and
money replacing parts when you have no idea if they need replacing or not. There are a
variety of things that can be causing your noise, some not even engine-related; my best
suggestion is to take it to a professional mechanic and have it diagnosed. If this is a work
truck and part of your revenue stream, you will have much greater and faster success going
that route than trying to ask the Internet for help via text-based descriptions.
money replacing parts when you have no idea if they need replacing or not. There are a
variety of things that can be causing your noise, some not even engine-related; my best
suggestion is to take it to a professional mechanic and have it diagnosed. If this is a work
truck and part of your revenue stream, you will have much greater and faster success going
that route than trying to ask the Internet for help via text-based descriptions.
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
I remember one time as a kid with my 1970 Mustang Fastback 351W, I at one time thought
I had a rod knock and thoughts of horrendously-expensive repair bills were running through
my head. I don't remember exactly what it turned out to be but I think it was ignition-related;
in any event, the engine itself was fine, the problems were from something stupid I had done
earlier....
Diagnosing those on the Internet is pretty much impossible, you need somebody who knows
what they're doing to take a look at it.
I had a rod knock and thoughts of horrendously-expensive repair bills were running through
my head. I don't remember exactly what it turned out to be but I think it was ignition-related;
in any event, the engine itself was fine, the problems were from something stupid I had done
earlier....
Diagnosing those on the Internet is pretty much impossible, you need somebody who knows
what they're doing to take a look at it.
