DieselEngineTrader's FREE Diesel Engine Forums

new topic search Categories login View Caterpillar Engines

CATEGORY LISTINGS > CATERPILLAR > C7 Cylinder 5 Knock & BlowBy, Need to Keep DRIVING [ REFRESH ]
Thread Title:

C7 Cylinder 5 Knock & BlowBy, Need to Keep DRIVING

Created On Friday April 08, 2016 18:37 Diesel Talk
Diesel Talk Forum

Diesel Talk Forum
Posts: 1
Joined: Apr 2016

Note Friday April 08, 2016 18:37 View thread in raw text format
Diesel Talk
I've got a bit of a situation with my '05 Freightliner Straight truck, with a C7 Engine in it. Took the unit to the freightliner dealer due to a heavy knock while driving, and a lot of blowby coming from the oil dip stick and breather. Basically been told by freightliner, engine is shot, burn the truck, get rid of it, or buy a whole new engine.. they wont look at it.. period.
So, what I got out of the ordeal from the mechanics is that cylinder #5 is the culprit, and its apparently not the injector, but the cylinder has been worn or ring failure causing the blowby and knock...
First off, has this happened to anyone else? A lot of what I've seen on the forums is that its usually and injector failure, either the injector leaking oil, or just steady open...
OR the HEUI pump... but the failure is only associated to cylinder #5... so cant it just be the injector and not the HEUI?

Now... the serious part of the question. If it is the cylinder and not the injector, what are the risks or just pulling the harness off of the injector on #5, and keep driving home (2000miles)? I'll be down a cylinder to only 5, lower power but no knock.. the truck would be empty so really no need for the power?

Let me know if I'm crazy and should ditch the truck and hitch hike home!!

C7 aint the way to go
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Young & Sons Inc.
Luoyang Diron Parts Trading Co.,Ltd
Heavy Quip, Inc.
Advertize on Diesel Engine Trader

Customer Testimonials


Subscribe to our mailing list to get all the latest DET news.as well as daily or weekly notifications of new engines and spare parts listings.

'We've sold at least 6 engines through DieselEnginetrader.com - it's great value advertising.'

Ted Hills, Ted's Trucks N Stuff, Midland City, Alabama, USA

'We sold a Turbo in 2 weeks to a guy in Houston! We also sold the first engine we listed - an old Hatz. It took 2 months to sell but that was OK as we couldn't move it locally. We track visitors to our website and we get lots from DieselEngineTrader.com. Your website really works, it's a great service and we'll be using DieselEngineTrader.com for years to come!'

Brad Marcak, Powerpro Texas, USA

'We're getting calls almost every day as a result of our listings in DieselEngineTrader.com'

Steve Spencer, Midwest Diesel Inc, Michigan, USA