June 23, 2018, 01:05:46 PM

Author Topic: Uh oh! Engine knocking?  (Read 10602 times)

Offline gus

  • Hero Member
  • *****
  • Posts: 3624
Re: Uh oh! Engine knocking?
« Reply #30 on: February 10, 2014, 04:32:01 AM »
Check the unused pulley at the end of the cam on the left side (Fan).

This thing takes a lot of torque and likes to work loose and is noisy. Watch it with the engine running to see if it wobbles. Been there!!
PD4107-152
PD4104-1274
Ash Flat, AR

Offline TomC

  • Hero Member
  • *****
  • Posts: 8642
Re: Uh oh! Engine knocking?
« Reply #31 on: February 10, 2014, 06:34:27 AM »
Listen to which side of the engine the noise is coming from, then remove that valve cover. Start the engine and when it makes the noise and see which Jake brake is firing off-can tell by it push down onto the exhaust valve. All others-quite guessing what the noise it. Good Luck, TomC
Tom & Donna Christman. '77 AMGeneral 10240B; 8V-71TATAIC V730.

Offline luvrbus

  • Hero Member
  • *****
  • Posts: 19420
Re: Uh oh! Engine knocking?
« Reply #32 on: February 10, 2014, 12:39:16 PM »
Does he have Jake ?
Life is short drink the good wine first

Offline opus

  • Hero Member
  • *****
  • Posts: 751
Re: Uh oh! Engine knocking?
« Reply #33 on: February 10, 2014, 04:40:24 PM »
Does he have Jake ?

Awww....you're going to ruin all our good advice by asking a common sense question!  LOL!!
1995 BB All-American - A Transformation.

Offline TomC

  • Hero Member
  • *****
  • Posts: 8642
Re: Uh oh! Engine knocking?
« Reply #34 on: February 10, 2014, 07:11:35 PM »
Since he has tall valve covers, I assume so.
Tom & Donna Christman. '77 AMGeneral 10240B; 8V-71TATAIC V730.

Offline zubzub

  • Hero Member
  • *****
  • Posts: 1212
  • '53 4104. Roadworthy but rough around the edges.
    • pics of my bus etc....
Re: Uh oh! Engine knocking?
« Reply #35 on: February 15, 2014, 02:14:30 PM »
seems to me he posted the problem has gone away....
but my2 cents..IMHO... FWIW.. it's the main bus nut working loose.

Offline expressbus

  • Full Member
  • ***
  • Posts: 170
Re: Uh oh! Engine knocking?
« Reply #36 on: February 15, 2014, 06:05:11 PM »
Speaking of nuts, I for one can't wait to get this new technology where all our vehicles talk with each other. Maybe then we won't have so many wing nuts cutting us off and then throwing out the anchor or loosing the accelerator pedal. This will be the first safety innovation that will actually tighten up the loose nut behind the steering wheel. Yeah, bring it on.
Will Garner, Jr
Southern Pines, NC
1991 Prevost Conversion by Country Coach

Offline Jeremy

  • Hero Member
  • *****
  • Posts: 2201
  • 1987 Bedford Plaxton
    • Magazine Exchange
Re: Uh oh! Engine knocking?
« Reply #37 on: February 15, 2014, 07:39:10 PM »
Speaking of nuts, I for one can't wait to get this new technology where all our vehicles talk with each other. Maybe then we won't have so many wing nuts cutting us off and then throwing out the anchor or loosing the accelerator pedal. This will be the first safety innovation that will actually tighten up the loose nut behind the steering wheel. Yeah, bring it on.

The technology is already there - it's the change in legislation to allow it that we're waiting for. I'm looking forward to it too - not so much because of the safety benefits but because I have better things to do with my time - driving a car, like riding a horse, should be something you do occasionally for fun, not something you have to do because the machine hasn't really evolved since the 19th Century

Jeremy
A shameless plug for my business - visit www.magazineexchange.co.uk for back issue magazines - thousands of titles covering cars, motorbikes, aircraft, railways, boats, modelling etc. You'll find lots of interest, although not much covering American buses sadly.

Offline Dave5Cs

  • Hero Member
  • *****
  • Posts: 3304
  • 1979 MCI MC5Cs 6V-71 644MT Allison, Roseville, CA
Re: Uh oh! Engine knocking?
« Reply #38 on: February 16, 2014, 12:19:32 AM »
And just like any vehicle if you don't keep up the maintenance on the system it will at one point not work anymore and I don't want to be next to that vehicle. Just another system they can charge for and make the outrageous cost of vehicles even higher.
"PATHFINDER"(Bus)
Toed 1998 Jeep TJ

Offline challenger440

  • Full Member
  • ***
  • Posts: 191
    • Mountainstar video Productions
Re: Uh oh! Engine knocking?
« Reply #39 on: February 16, 2014, 04:10:44 AM »
And of course your older vehicle will be unsafe and the gov. will MAKE YOU replace it.  At lunch today I sat and watched people parallel park their cars .  It was embarrassing to even watch.  Maybe we should spend more on driver training and worry less about a new gadget that will only make drivers worse. 

Did the OP decide on and engine?  JM
John M.
Helena, Mt
MC7  "under construction"

Offline Bryan

  • Sr. Member
  • ****
  • Posts: 261
Re: Uh oh! Engine knocking?
« Reply #40 on: February 16, 2014, 05:00:34 AM »
seems to me he posted the problem has gone away....
but my2 cents..IMHO... FWIW.. it's the main bus nut working loose.

Yes, it hasn't made that sound since that day. I don't know what it was other than laying hands on it and praying (seriously!) Once we got the bus to moving forward and backwards a few feet a few times, it quit. We have drove it a couple times since. Prior to that it hadn't been drove in a few months. Thank everyone for their help.  ;D
Bryan
1996 Prevost XL
1967 PD4107-756
Toccoa, GA