The message to which you are about to reply is shown first. GO TO REPLY FORM



 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

Sound like Carbon Build-up to you?

posted by  TONY H on  Wed Jul 1 06:59 CST 2009
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 17 16:39 CST 2014
[RELATED]

Not just Volvo. Has anyone experienced carbon buildup on any car that made the car sound like it has a Rod knock?
Does anyone think that Carbon breaking loose off a Piston can cause a Valve to bend?
My daughters Blazer (4.3 V6) went from running beautifully to this harsh Knock in a blink of an eye. At that time it runs very rough like it's down a cylinder. But then noise goes away, Roughness disappears and all is good. I have let it idle for an hour that way and out of nowhere the hard knock comes back. I will do a compression check but the symtoms have me Buffaloed.
Seems like a stuck Valve or lifter but the Knock really sounds like Lower End... but then all goes away except for a new slight tap sound (hence my bent valve question). Then the hard knock comes back at anytime. The Blazer Websites are useless.. No 'real' engine knowledge on those sites.

--
'75 Jeep CJ5 345Hp ChevyPwrd, two motorcycles, '85 Pickup: The '89 Volvo is the newest vehicle I own. it wasn't Volvos safety , it was Longevity that sold me http://home.no.net/ebrox/Tony's%20cars.htm






USERNAME
Use "claim to be" below if you don't want to log in.
PASSWORD
I don't have an account. Sign me up.
CLAIM TO BE
Use only if you don't want to login (post anonymously).
ENTER CAPTCHA CODE
This is required for posting anonymously.
OPTIONS notify by email
Available only to user accounts.
SUBJECT
MODEL/YEAR
MESSAGE

DICTIONARY
LABEL(S) +
IMAGE URL *
[IMAGE LIBRARY (UPLOAD/SELECT)]

* = Field is optional.

+ = Enter space delimited labels for this post. An example entry: 240 muffler


©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.