It is currently Mon Feb 23, 2026 5:13 am




Reply to topic  [ 6 posts ] 
 black death 4500 issue 
Author Message
MMT Member

Joined: Wed Nov 03, 2010 9:03 pm
Posts: 21
Post black death 4500 issue
Running down river motor bogged down quit I restarted now sounds like its running on one cylinder and almost sounds like sucking air by exhaust any help would be great I have about 60hours on it


Thu Nov 28, 2013 7:24 am
Profile
MMT Elite Member
User avatar

Joined: Tue Nov 23, 2010 6:33 pm
Posts: 5603
Location: Corner of Hell an high water, La
Post Re: black death 4500 issue
Well it's one of 3 things; air, fuel, or fire.

So first touch the exhaust manifold on both sides. The one that doesn't burn you is the side with the problem. Check said cylinder's spark plug to see of you are getting fire. If not start with changing te spark plug . Also check for chaffing for cracks in the boot or chaffing in the wire were it pass under the cowling. This can cause a short before your spark plug. An easy way to test this is if the motor is running touch each heat shield. You will know if it is shorting out.

Next pop your valve cover and insure all push rods are intact and have the correct lash. Turn the key on(do not start), engage the clutch, then turn the prop by hand while watching the valves. If one valve is not moving, once again reassure that the push rod seated on the lifter and the rocker. If not you rolled a love on your cam.


Next clean your carb.

_________________
You have your whole life to be an idiot, take a day off!


Thu Nov 28, 2013 7:36 am
Profile
MMT Member

Joined: Wed Nov 03, 2010 9:03 pm
Posts: 21
Post Re: black death 4500 issue
:oops: :lol: :lol: I found the problem after looking around couldn't find anything but noticed a blocked exhaust little metal cap looking thing in there poked it with a stick it moved grabbed a pliers yanked it out runs fine again a little louder now but im ok with that thanks for the help air flow was the issue


Thu Nov 28, 2013 12:23 pm
Profile
MMT 1000 Club
User avatar

Joined: Tue Jun 05, 2012 7:25 pm
Posts: 4205
Location: St. Amant, LA
Post Re: black death 4500 issue
Damn the welds on the cap on the exit tube broke and the cap was making its way out and plugged the outlet? That's crazy! That things welded almost all the way around. I'm surprised that broke.


Thu Nov 28, 2013 1:27 pm
Profile
MMT Member

Joined: Wed Nov 03, 2010 9:03 pm
Posts: 21
Post Re: black death 4500 issue
mine only had two spot welds on it thinking new exhaust any suggestions looking for louder does any exhaust help better than others


Fri Nov 29, 2013 8:04 am
Profile
MMT Addict

Joined: Mon Jun 18, 2012 7:33 pm
Posts: 681
Location: DeKalb, Texas between the rivers
Post Re: black death 4500 issue
I have gutted several exhaust and found some that only had spot welds and some that were welded up solid. I just gutted my new gtr exhaust and that sucker was never going to come apart.

_________________
Uncle J's Custom Bow Fishing Rig 20/72 30" Sides, Calens Modded Dual GTR's
Boat Name: The Gar Barge
Team Name: Southern Stickers

18/58 Uncle J Custom 3/16 bottom 24" sides w/catwalks 6' front deck with another GTR Pushing it.

17/54 Gator Trax 35 Mud Buddy W/All aluminum FPR Mod SOLD


Fri Nov 29, 2013 10:09 pm
Profile
Display posts from previous:  Sort by  
Reply to topic   [ 6 posts ] 

Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to: