Clutch slipping? How to tell?

[junk]

Ok on my 1993 truck I'm wondering if the clutch is slipping. I've had it twice now that I'll be pulling my 8'x30' enclosed trailer and i'll be trying to accelerate in 4th gear. When I hit the fuel the tach will jump 500 rpm, but the speed isn't. Seems like a slipping clutch to me. I'll let out of the throttle to let the RPM's settle down and then it seems fine for the rest of the trip. Both times it's done this is within the first 4-5 miles of pulling the trailer. Otherwise with smaller trailers or running empty the clutch feels great.

As I do have an extreme oil consumption/leak issue with this truck I'm also wondering if I have an oiled up clutch and that its slipping to burn off the oil then holding OK? Probably a stretch but just wondering.

So Slipping clutch from wear or Oiled up clutch? Any good tell tales? I know I need to pop the access cover and take a look in there.

Thanks,
Jeremy

 

[Trying my best]

I suppose it he oil feed to the turbo is leaking it could get on the clutch. A member here told me that I should look at that when I do my clutch. I haven't done the job yet but it's on my check list.

 

[gdhillon]

From what ive been told, if it slips like you described in every gear then its the clutch....so in your case id assume its not the clutch

 

[RLDSL]

An oily clutch will chatter like crazy when pulling out with a heavy load, if it engages smoothly, then it's not oil.
You may also have another issue clouding the works. Do you still have the dual mass flywheel ? THat's a good size trailer. If you still have the factory DMF, you may have smoked the overload protection device in the center of teh DMF. There is a little metal to metal set of disks in the center of teh flywheel that are designed to only hold the maximum load of teh truck( and just barely that ) when it is new , it is supposed to protect the trans gears from abusive shock loads, but it's stupud, when you need it most, the inside of your flywheel folds and starts slipping like crazy.
Mine went when I was having a time getting out of a tight place with my 32 ft enclosed carhauler backing uphill , all the sudden, it felt like the clutch had smoked, and I couldnt pull the top 2 gears without slipping. Once it cooled down, I was able to pull again in 4th but I knew it was a total gonner ...sound familiar

 

[junk]

The guys I bought the truck from said it was the original clutch. I don't know if I believe them. It could be the original. It starts out smooth so I'm leaning away from it being oily. I'm guessing I'll be doing a single mass swap on this. Probably at the same time I pull the engine to figure out the oil consumption.

Thanks Guys

 

[RLDSL]

If you clutch was worn, It would slip all the time when put under load , same with oil saturated, except oil saturated would chatter so it kind of sounds like you have a completely worn flywheel, clutch, and whole works there, if it's original. Definately good time for the switch.