Very angry knocking sound, need help! - Suzuki Forums: Suzuki Forum Site
Suzuki Forum Suzuki Forums

» Auto Insurance
» Featured Product
Wheel & Tire Center

Go Back   Suzuki Forums: Suzuki Forum Site > Suzuki Models > Suzuki Jimny, Sierra & Samurai Forum
Register Home Forum Active Topics Photo Gallery Garage Search Today's Posts Mark Forums Read Auto EscrowAuto LoansInsurance Advertise

Suzuki-Forums.com is the premier Suzuki All Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 02-12-2009, 04:07 PM   #1 (permalink)
 
Join Date: Feb 2009
Posts: 23
Gallery: 0
fyfer is on a distinguished road
Default Very angry knocking sound, need help!

I have a 86 sammy and last week it started to klatter like nuts when i giver gas. Piston rod right? The thing is it only shows up at about 3000rpm when given gas, not when spooling down and when the ignition timming is out far enough so that it lacks any power, the noise goes away!

Any help would be much appreciated!

Last edited by fyfer; 02-12-2009 at 04:10 PM.
fyfer is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 02-12-2009, 06:00 PM   #2 (permalink)
Member
 
Pilsner Pig's Avatar
 
Join Date: Nov 2008
Location: Quesnel, BC
Posts: 94
Gallery: 3
Pilsner Pig is on a distinguished road
Default

Welcome aboard, a fellow BC 'zuki owner. We have had this subject come up on this site before and I have personally experienced it......I think it is the dreaded piston slap. I 'm not sure why it doesn't do it with the timing thing but it sounds like piston slap. If you get a chance look at the recent thread "engine knock" and I'm sure you can find more info with how other people have dealt with this.

Cheers

Last edited by Pilsner Pig; 02-12-2009 at 06:07 PM.
Pilsner Pig is offline   Reply With Quote Quick reply to this message
Old 02-13-2009, 03:36 PM   #3 (permalink)
 
Join Date: Feb 2009
Posts: 23
Gallery: 0
fyfer is on a distinguished road
Default

Thanks, I'll check it out.
fyfer is offline   Reply With Quote Quick reply to this message
 
Old 02-15-2009, 11:23 PM   #4 (permalink)
Member
 
Join Date: Jan 2009
Posts: 71
Gallery: 0
squid is on a distinguished road
Default the knocks

two quick checks
1. pull dipstick and look closely at oil. if there are tiny gold flakes floating around that a sign a bearing has gone south.
2 if you hear the knock at idle, pull one plug wire at atime and if the knock goes away that is sign that the rod bearing is bad.

"piston slap" is when the skirt of the piston is worn and the piston rocks in the cylinder bore. it will usualy be loudest when the engine is cold . after the engine warns the piston will expand and knock will decrease. for some reason this is a common for the rear piston to develope the problem. I have seen engine run for a long time with piston slap knock. using 40w oil also seem to help.
squid is offline   Reply With Quote Quick reply to this message
Old 02-16-2009, 04:14 AM   #5 (permalink)
 
Join Date: Feb 2009
Posts: 88
Gallery: 1
Harleyindahouse is on a distinguished road
Default

Quote:
Originally Posted by fyfer View Post
I have a 86 sammy and last week it started to klatter like nuts when i giver gas. Piston rod right? The thing is it only shows up at about 3000rpm when given gas, not when spooling down and when the ignition timming is out far enough so that it lacks any power, the noise goes away!

Any help would be much appreciated!
$200.00 I have good 1.6 litre 8valve! PM me if your interested....

If your on the power when it occurs and only comes in at 3000 it does sound more like a bearing issue but not to say it can't be wrist pin either. You don't mention if you have any oil pressure warning but personally I would be more inclined to think wrist pin failure first. I had an old Pontiac that acted like that; one side broke so you couldn't hear the knock until you were at moderate power!
Harleyindahouse is offline   Reply With Quote Quick reply to this message
Old 02-16-2009, 04:22 AM   #6 (permalink)
 
Join Date: Feb 2009
Posts: 88
Gallery: 1
Harleyindahouse is on a distinguished road
Default

You might try this first; warm it up completely at idle then increase rev slightly and dump 1/2 a litre or so of trans fluid down the throttle bore.

Somewhat rare but it could also be severe carbon knock!!! Worth a shot before finally giving in and putting the motor to rest.....

You can just saturate the throttle till it dies; leave it sit for an hour or so then start it and run until the fogging clears.
Harleyindahouse is offline   Reply With Quote Quick reply to this message
Old 02-16-2009, 10:11 AM   #7 (permalink)
Member
 
Pilsner Pig's Avatar
 
Join Date: Nov 2008
Location: Quesnel, BC
Posts: 94
Gallery: 3
Pilsner Pig is on a distinguished road
Default

Quote:
Originally Posted by Harleyindahouse View Post
$200.00 I have good 1.6 litre 8valve! PM me if your interested....
Go for it. Call Kevin at KORE4X4 in Vancouver and get him to fab your tranny tabs and you are pure gold! I did this swap in my garage in 2 days and was amazed at how easy and awesome it is.
Pilsner Pig is offline   Reply With Quote Quick reply to this message
Old 03-31-2009, 05:39 PM   #8 (permalink)
 
Join Date: Feb 2009
Posts: 23
Gallery: 0
fyfer is on a distinguished road
Default

Wow, $200? Very interested! Do you know how many kilometers are on it or if has had any work done? Would you be willing to part with the manifolds?
fyfer is offline   Reply With Quote Quick reply to this message
Old 03-31-2009, 05:44 PM   #9 (permalink)
 
Join Date: Feb 2009
Posts: 23
Gallery: 0
fyfer is on a distinguished road
Default

Quote:
Originally Posted by Pilsner Pig View Post
Go for it. Call Kevin at KORE4X4 in Vancouver and get him to fab your tranny tabs and you are pure gold! I did this swap in my garage in 2 days and was amazed at how easy and awesome it is.
Hey, Pilsner Pig, did you go for the fuel injection? Because I heard if you keep the carb you need a body lift for it to clear the hood. Also I have an '85 so that meens no compter, can I even do FI?
fyfer is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

  Suzuki Forums: Suzuki Forum Site > Suzuki Models > Suzuki Jimny, Sierra & Samurai Forum

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Suzuki Forums: Suzuki Forum Site forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 06:11 PM.



Powered by vBulletin® Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.