texasfishingforum.com logo
Main Menu
Advertisement
Affiliates
Advertisement
Newest Members
Kschamp198, jvonglahn, Jpeddy1997, Trevor_galleyfishing, sgeorge95
119420 Registered Users
Top Posters(All Time)
TexDawg 122,352
hopalong 121,182
Bigbob_FTW 100,629
Bob Davis 89,759
John175☮ 86,096
Pilothawk 83,640
Mark Perry 73,511
Derek 🐝 68,435
JDavis7873 67,416
Forum Statistics
Forums59
Topics1,049,191
Posts14,136,809
Members144,420
Most Online39,925
Dec 30th, 2023
Print Thread
Page 2 of 2 1 2
Re: Is my power head gone? [Re: mikep] #9328102 09/19/13 03:44 AM
Joined: Apr 2010
Posts: 1,207
B
barryfish Offline
Extreme Angler
Offline
Extreme Angler
B
Joined: Apr 2010
Posts: 1,207
Wonder what caused the powerhead to go out

Re: Is my power head gone? [Re: mikep] #9328146 09/19/13 04:01 AM
Joined: Feb 2012
Posts: 182
mikep Offline OP
Outdoorsman
OP Offline
Outdoorsman
Joined: Feb 2012
Posts: 182
What would be weird about 2 and 4 going bad? Are those uncommon cylinders to go? 2 had no compression but spark plug looked normal, 4 had no compression but the plug had little metal dobs metal to it ..

Re: Is my power head gone? [Re: mikep] #9328230 09/19/13 05:29 AM
Joined: Oct 2010
Posts: 9,666
B
Bradshuflin aka hunter'sdad Offline
TFF Celebrity
Offline
TFF Celebrity
B
Joined: Oct 2010
Posts: 9,666
I guess im just curious to see what the cause was im not really familiar with the hpdi if a fuel pump went out that goes to those 2 i guess that would make sense.

Re: Is my power head gone? [Re: mikep] #9328347 09/19/13 11:35 AM
Joined: May 2003
Posts: 11,586
gary purdy Offline
TFF Guru
Offline
TFF Guru
Joined: May 2003
Posts: 11,586
#4 is where I would start looking for the problem. When a 2 cycle loses a cylinder from a piston seizing it is pretty normal for it to contaminate a cylinder next to it or across from it.


The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
Re: Is my power head gone? [Re: mikep] #9328745 09/19/13 02:04 PM
Joined: Jun 2011
Posts: 219
F
Fastest115GP100 Offline
Outdoorsman
Offline
Outdoorsman
F
Joined: Jun 2011
Posts: 219
Sounds similar to what happened to me about a month ago. I was running 5500rpm, then the motor kicked down to 3400rpm. I was able to limp her back to the dock. Found little pieces of metal on the #1 spark plug. I didnt have any compression loss tho. $3k later Im back on the water. My bearing cages failed and broke my rod. Service Marine in Emory was very honest with me.


The Ruger GP100 is KING
Re: Is my power head gone? [Re: mikep] #9328784 09/19/13 02:19 PM
Joined: Nov 2007
Posts: 5,685
ssmith Online Content
TFF Celebrity
Online Content
TFF Celebrity
Joined: Nov 2007
Posts: 5,685
a lot of these motors fail because folks don't change all the fuel filters on the 100hr service like they are intended.once they start to run without the regular power the damage to the hard parts is sometimes already done.

Re: Is my power head gone? [Re: mikep] #9332070 09/20/13 03:19 PM
Joined: Jun 2008
Posts: 432
C
Chuck N. Wind Offline
Angler
Offline
Angler
C
Joined: Jun 2008
Posts: 432
B.O.A.T.

Break Out Another Thousand


God does not charge time spent fishing against a man's allotted life span. - Indian Proverb
Re: Is my power head gone? [Re: Chuck N. Wind] #9356087 09/29/13 01:34 PM
Joined: Mar 2009
Posts: 140
graywolfrider Offline
Outdoorsman
Offline
Outdoorsman
Joined: Mar 2009
Posts: 140
As others have stated you first need to find out what the problem is and second what caused it. rebuilding the power head will solve problem number 1, but will not solve problem number two if cause of failure was not mechanical. Earlier yamaha HPDI's had alot of powerhead problems and even yamaha themselfs could or would not put their finger on exact causes. I have seen numerous of these powerheads and I am a firm believer in the major cause is the effected cylinder was running lean. To solve that problem has much as you possible can, you MUST keep clean fuel going to the cylinders at all times and the only way to do that is by regular maintenance of the 11 filters (actually 3 filters and 8 screens) wich are on the motor itself as well as the 10 micron filter everyone should have installed in their boat. Also inportant is the regular maintenance you should be having done on the fuel injectors themselfs. As far as cost of where your at now expect a powerhead rebuild itself to run anywhere from $3500 to $5000 but do not forget the cost of all the filters and service that should be done on the injectors to run in the neighborhood of another $500 to $1000. Sorry for the long post but don't want you to just get the powerhead rebuilt only to go throught it again in a matter of a few months if not sooner.

Re: Is my power head gone? [Re: mikep] #9356625 09/29/13 06:06 PM
Joined: Feb 2012
Posts: 182
mikep Offline OP
Outdoorsman
OP Offline
Outdoorsman
Joined: Feb 2012
Posts: 182
Thanks for the info

Page 2 of 2 1 2
Previous Thread
Index
Next Thread

© 1998-2022 OUTDOOR SITES NETWORK all rights reserved USA and Worldwide
Powered by UBB.threads™ PHP Forum Software 7.7.3