Go Back  Offshoreonly.com > Technical > General Q & A
Backfiring through intake >

Backfiring through intake

Notices

Backfiring through intake

Old 05-16-2017 | 06:39 PM
  #21  
Thread Starter
Registered
 
Joined: Jan 2016
Posts: 49
Likes: 0
From: Pasadena, Md
Default

Originally Posted by dereknkathy
I would take a shot at freeing up the valve and doing a compression test.
Pushrod is bent. couple of valves shot. sending to machine shop to have work done and heads cleaned. Also going to go ahead and get new manifolds & risers for both engines. Turns out one of the manifolds was leaking which is the root cause of all this. Live and learn.
Blown284 is offline  
Reply
Old 05-16-2017 | 06:47 PM
  #22  
SB
Registered
20 Year Member
 
Joined: Nov 2004
Posts: 14,100
Likes: 3,687
From: On A Dirt Floor
Default

Salt water ?
SB is offline  
Reply
Old 05-17-2017 | 08:10 AM
  #23  
Registered
10 Year Member
 
Joined: Feb 2012
Posts: 4,031
Likes: 10
From: westville, NJ
Default

Originally Posted by Blown284
Pushrod is bent. couple of valves shot. sending to machine shop to have work done and heads cleaned. Also going to go ahead and get new manifolds & risers for both engines. Turns out one of the manifolds was leaking which is the root cause of all this. Live and learn.
Which manifold? Gil style? I believe the risers, being stainless, have very long lives. The manifolds are the culprit.
dereknkathy is offline  
Reply
Old 05-17-2017 | 08:55 AM
  #24  
253
Gold Member
20 Year Member
Gold Member
 
Joined: Jan 2002
Posts: 702
Likes: 26
From: Southern, IL.
Default

=Blown284;4554613]Pushrod is bent. couple of valves shot. sending to machine shop to have work done and heads cleaned. Also going to go ahead and get new manifolds & risers for both engines. Turns out one of the manifolds was leaking which is the root cause of all this. Live and learn.[/QUOTE]

Good idea, don't patch it up,,send to the machine shop and get it fixed properly .,save a lot of problems later on.
253 is offline  
Reply
Old 05-21-2017 | 05:55 PM
  #25  
Thread Starter
Registered
 
Joined: Jan 2016
Posts: 49
Likes: 0
From: Pasadena, Md
Default

Originally Posted by SB
Salt water ?
Yep.
Blown284 is offline  
Reply
Old 05-21-2017 | 05:56 PM
  #26  
Thread Starter
Registered
 
Joined: Jan 2016
Posts: 49
Likes: 0
From: Pasadena, Md
Default

Originally Posted by dereknkathy
Which manifold? Gil style? I believe the risers, being stainless, have very long lives. The manifolds are the culprit.
Stock mercruiser style... not stainless.
Blown284 is offline  
Reply
Old 05-21-2017 | 06:10 PM
  #27  
Registered
10 Year Member
 
Joined: Feb 2012
Posts: 4,031
Likes: 10
From: westville, NJ
Default

Ok, then look on ebay for stainless risers that fit stock manifolds.http://m.ebay.com/itm/816900A7-Stain...%257Ciid%253A1 you can usually find en about 150 a pair.

Last edited by dereknkathy; 05-21-2017 at 06:16 PM.
dereknkathy is offline  
Reply

Posting Rules
You may not post new threads
You may not 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


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.