FX24D Not running

[mrrooj]

Never laid eyes on the oil pump and yours is behind the front gear cover. Something happened to cause your rod bearing failure. No or low oil pressure would be one main cause. It would be bad to put it back together without oil pressure. Probably nothing wrong with it but are you willing to chance it?

What do your cam lobes look like? Are they good and smooth?

Cam lobes look smooth and shiny..


well im hoping ive got enough taken apart to finally make some decisions.
removed the hydraulic pump, crankshaft bolt/pulley and timing cover:
Shared album - Eric Rujiraviriyapinyo - Google Photos

got all 3 of the timing marks to line up, took a lot of rotations:
Shared album - Eric Rujiraviriyapinyo - Google Photos

crankshaft out:
Shared album - Eric Rujiraviriyapinyo - Google Photos

Notice the two main seal caps bearings that surround the bad cylinder are scored: (you can also see a little bearing flake on the first one, those were everywhere)
Shared album - Eric Rujiraviriyapinyo - Google Photos

other side of the main bearings:
Shared album - Eric Rujiraviriyapinyo - Google Photos

Oil pump: (not sure what to look for, seems okay visually)
https://photos.app.goo.gl/7LWYahmc1DBUri7cA

Probably going to take it to a machine shop next to see what they think, have them look at the crankshaft, and rod, and piston fitment, head straightness. I found a crankshaft repair guy if thats needed. then spend some money on parts.

anything else i should check. should i check the camshaft bushings?

 

[winston1]

Looking at your oil pump pictures I am thinking I see grooving inside. Will the back not come off the pump?

Examining closely with a flash light in the cam bearing area does things look tight? Hopefully no go but take the thinnest feeler gauge you have and see if you can work it in around the cam bearing.

Cylinder condition? Lip at top? If you have micrometers check dimensions top to bottom on worst looking cylinder. Work around it making sure it is round.

I admire your picture taking and your video's. Outstanding! :thumbsup:

 

[mrrooj]

Looking at your oil pump pictures I am thinking I see grooving inside. Will the back not come off the pump?

Examining closely with a flash light in the cam bearing area does things look tight? Hopefully no go but take the thinnest feeler gauge you have and see if you can work it in around the cam bearing.

Cylinder condition? Lip at top? If you have micrometers check dimensions top to bottom on worst looking cylinder. Work around it making sure it is round.

I admire your picture taking and your video's. Outstanding! :thumbsup:

Took a look at the oil pump again and there is no way to open it up. the tech guide says i would need to pry the gear off with a knife edge puller. ill keep that in mind though.

I ended up just popping the front timing plate off. idle pulley is two bolts and then a few more bolts and the entire plate comes off , with it the injector pump too. now im down to pretty much just the block:
Shared album - Eric Rujiraviriyapinyo - Google Photos


took a look at the camshaft and the bushings and i think they look fine, Still small flecks of metal here and there but it doesn't look scored or anything. small bits of rust maybe on the lobes, nothing that i can feel with a fingernail though.:
Shared album - Eric Rujiraviriyapinyo - Google Photos


Thanks winston and all the forum member for the friendly advice.

oh and what is this thing? it has a 1/4 clear hose just hanging down from it and an electrical connector, it has a spring arm connected to the injector pump.:
Shared album - Eric Rujiraviriyapinyo - Google Photos

 

[winston1]

"oh and what is this thing? it has a 1/4 clear hose just hanging down from it and an electrical connector, it has a spring arm connected to the injector pump.:
Shared album - Eric Rujiraviriyapinyo - Google Photos"

Stop motor. when you turn the key off it shuts the fuel off.

 

[mrrooj]

small update:

i wanted to try sanding down the bad journal on the crankshaft. I watched a few videos on how to do it like this one:
BackYard CrankShaft Polishing - YouTube

used 400 wet/dry sandpaper and a strip of fabric and went through a single sheet, so roughly 8-9 pieces. Even though the fabric is wrapped a few times around the journal it seems that it concentrates the force opposing the direction you are pulling (makes sense) so i managed to get one side really smooth, then rotated the crank 180 degrees away from me and repeated but ran out of paper. but the results are pretty good so far. i figured i would try this first and then take it to a machine shop. Figured i couldnt mess it up too much more if i was careful. Anyhow here are the results. hard to take a photo since it was dark when i finished up but i think you can see the difference.
Shared album - Eric Rujiraviriyapinyo - Google Photos

 

[winston1]

I can't know anything for certain about your results but a micrometer all the way around the journal is the key to good results. Looks won't do it. Not meaning to sound smarty with my comment but smoothness alone is not good enough. Lastly, no, you aren't going to hurt it because that roughness does have to come off.

 

[CoyPatton]

I can't know anything for certain about your results but a micrometer all the way around the journal is the key to good results. Looks won't do it. Not meaning to sound smarty with my comment but smoothness alone is not good enough. Lastly, no, you aren't going to hurt it because that roughness does have to come off.

Agree with Winston on both counts, you are not going to damage it by smoothing out the rough spots as they do need to be gone. But of equal concern to smoothness, is roundness.

Consider a brake rotor for a comparison, it can visually look shiny smooth and even pass a fingernail groove check, but still have a visually undetectable warp in the surface. While it appears perfect, you will still experience a wobble while braking, if a front rotor, the steering wheel is going to move left to right as you brake!

They only way to check this is with a extremely sensitive measuring device. If you plan to take it to a machine shop, load it up and take it, they will check it for roundness and tolerance to be turned before beginning

 

[mrrooj]

Agree with Winston on both counts, you are not going to damage it by smoothing out the rough spots as they do need to be gone. But of equal concern to smoothness, is roundness.

Consider a brake rotor for a comparison, it can visually look shiny smooth and even pass a fingernail groove check, but still have a visually undetectable warp in the surface. While it appears perfect, you will still experience a wobble while braking, if a front rotor, the steering wheel is going to move left to right as you brake!

They only way to check this is with a extremely sensitive measuring device. If you plan to take it to a machine shop, load it up and take it, they will check it for roundness and tolerance to be turned before beginning

no offense taken on any of this. I was thinking the same thing. I thought i would try. Its going to machine shop to get everything checked out. Question though, if someone had put under sized bearings or other non-spec replacement parts, the only way to tell would be to take measurements correct? would there be a stamp or some other kind of marking that would indicate? (like a best practices thing.. im sure not everyone would follow but curious)

 

[winston1]

I am not aware of any markings being made doesn't mean it couldn't happen.

 

[bmaverick]

no offense taken on any of this. I was thinking the same thing. I thought i would try. Its going to machine shop to get everything checked out. Question though, if someone had put under sized bearings or other non-spec replacement parts, the only way to tell would be to take measurements correct? would there be a stamp or some other kind of marking that would indicate? (like a best practices thing.. im sure not everyone would follow but curious)

Here we are in 2021. This has been a nice read and adventure. Like a great book, I could stop reading this progress. YES, the photos, videos and the reference stuff got me hook. Then the story just stops.

:anyone: