Surging but not surging?
02-05-2020, (Subject: Surging but not surging? ) 
Post: #1
Surging but not surging?
Truck at high 900rpm idle does a normal idle noise then for maybe 4-5 cycles kind of acts like a surge but rpms don't move. It's kinda like it fires all the cylinders 1 right after another type sound you cant really hear it in the engine it's more or less it's more in the vibration it sends through the exhaust. I can somewhat replicate by barely tapping the accelerater over and over. Only difference is I make rpms move.


User's Signature: 2010 Lonestar - CM871 - 13sp - 3.70s - skateboarder
replyreply
02-05-2020, (Subject: Surging but not surging? ) 
Post: #2
RE: Surging but not surging?
Sounds like a harmonic vibration and probably nothing to be concerned with. Does it do it at any other rpm?
replyreply
02-05-2020, (Subject: Surging but not surging? ) 
Post: #3
RE: Surging but not surging?
Can't hear it at 775 idle but both my 900 and 1100rpm high idles do it


User's Signature: 2010 Lonestar - CM871 - 13sp - 3.70s - skateboarder
replyreply
02-05-2020, (Subject: Surging but not surging? ) 
Post: #4
RE: Surging but not surging?
I have a 2350 at about 900rpm I don't like the sound it makes. Seems like it is in a unbalanced state.


User's Signature: 2015 Kenworth T660
replyreply
02-05-2020, (Subject: Surging but not surging? ) 
Post: #5
RE: Surging but not surging?
Might be the turbo doing a cleaning cycle


User's Signature: It's hard to win an argument with a smart person, but it's damn near impossible to win an argument with a stupid person
replyreply
02-05-2020, (Subject: Surging but not surging? ) 
Post: #6
RE: Surging but not surging?
Could be idk just seemed out of place. Next target I'm going after is why I get a noseful of crank case fumes every time I use engine brake to slow down. Used to think it was valve stem seals but now with new head still does it. Maybe a turbo seal but I would think over a year of it I would think the bearings would have dynamited. As it barely has anything coming out of crank vent at idle but idk under load. Can't catch that perverbial tail I'm chasing.


User's Signature: 2010 Lonestar - CM871 - 13sp - 3.70s - skateboarder
replyreply
02-06-2020, (Subject: Surging but not surging? ) 
Post: #7
RE: Surging but not surging?
flex-pipe behind the turbo not installed properly / cracked? - seen that a hundred times on prostar.


User's Signature: ->: What I post is just my own thoughts and Opinions! --- I AM Full Of S__T!.
replyreply
02-06-2020, (Subject: Surging but not surging? ) 
Post: #8
RE: Surging but not surging?
Could be cracked hard to tell since it's the woven wire style


User's Signature: 2010 Lonestar - CM871 - 13sp - 3.70s - skateboarder
replyreply
02-06-2020, (Subject: Surging but not surging? ) 
Post: #9
RE: Surging but not surging?
Smoke a cigar around the pipe and see if it blows away.
replyreply
 Thanks given by: hhow55





  
  
Theme by MyBB Addict
Contact Us | Rawze.com | Return to Top | Return to Content | Lite (Archive) Mode | RSS Syndication