Reply
 
Thread Tools Search this Thread
 
Old 01 August 2012, 20:03   #1
Member
 
blueboy758's Avatar
 
Country: UK - England
Town: Thornaby
Boat name: Storm
Make: Humber Ocean Pro 6.5
Length: 6m +
Engine: Suzuki DF 150
Join Date: Jan 2008
Posts: 355
Evinrude 115 ficht missfire.....

Father reading more and more on the Internet......

As I have previously said my engine miss fires after 4250rpm....... But I have just thought could it be the fact that I only have the tcw3 oil in and not the xd50...?

The engine is fine at everything else it just seems as if there is an oil, air fuel mixture problem to?!!

Anyone else had any issue like this ?
__________________
blueboy758 is offline   Reply With Quote
Old 01 August 2012, 20:35   #2
Member
 
Pikey Dave's Avatar
 
Country: UK - England
Town: South Yorks
Boat name: Black Pig
Make: Ribcraft
Length: 5m +
Engine: DF140a
MMSI: 235111389
Join Date: Feb 2008
Posts: 11,865
RIBase
Quote:
Originally Posted by blueboy758 View Post
Father reading more and more on the Internet......

As I have previously said my engine miss fires after 4250rpm....... But I have just thought could it be the fact that I only have the tcw3 oil in and not the xd50...?

The engine is fine at everything else it just seems as if there is an oil, air fuel mixture problem to?!!

Anyone else had any issue like this ?
The oil shouldn't make any difference, as long as it's TCW3. You need to get it onto a laptop with the diagnostic software & do some dynamic tests, shutting down the injectors & ignition in turn until you narrow it down.
__________________
Rule#2: Never argue with an idiot. He'll drag you down to his level & then beat you with experience.
Rule#3: Tha' can't educate pork.
Rule#4:Don't feed the troll
Pikey Dave is offline   Reply With Quote
Old 01 August 2012, 20:40   #3
Member
 
Ribshop's Avatar
 
Country: UK - England
Town: River Hamble
Length: 6m +
Join Date: Oct 2005
Posts: 726
Plugs can be a problem. Do you know when they were last changed?
__________________
RIB REPAIRS | RE-TUBES | RE-FIT - OUTBOARD SERVICING - ONLINE SHOP FOR RIB & TOHATSU PARTS .
Phone: 01489 556800 www.rib-shop.com
Ribshop is offline   Reply With Quote
Old 01 August 2012, 21:08   #4
Dhf
Member
 
Dhf's Avatar
 
Country: UK - Wales
Length: no boat
Join Date: Jan 2012
Posts: 1,012
Only ever used the xd50, with no prob's, so can't compare the other, might be worth plugin her into dia's nos sticks.
Maybe a new set of ht leads might work, I remenber someone told me there quite fragile and easy to damage the internal core, only effecting performance at certain rpm/vibration levels.

Tis/probabably/bolix/though
__________________
Dhf is offline   Reply With Quote
Old 02 August 2012, 11:47   #5
Member
 
Hightower's Avatar
 
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,866
Do you have problems starting?

As ribshop says, how many hours ago did you last change the spark plugs?
__________________
Andy

Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
Hightower is offline   Reply With Quote
Old 02 August 2012, 12:47   #6
Member
 
blueboy758's Avatar
 
Country: UK - England
Town: Thornaby
Boat name: Storm
Make: Humber Ocean Pro 6.5
Length: 6m +
Engine: Suzuki DF 150
Join Date: Jan 2008
Posts: 355
I'll give the plugs a look at and a clean as well as making sure they are indexed.
They have done about 12 hours now but it did it when they were new to.
The only problem with sticking it it's a 4 HR minimum round trip so was trying to strike a few things off first.

Yeah its the marine 2stroke I used.
__________________
blueboy758 is offline   Reply With Quote
Old 02 August 2012, 12:48   #7
Member
 
blueboy758's Avatar
 
Country: UK - England
Town: Thornaby
Boat name: Storm
Make: Humber Ocean Pro 6.5
Length: 6m +
Engine: Suzuki DF 150
Join Date: Jan 2008
Posts: 355
And no there are no problems starting or anything.... Just over those revs, when I back off it's ok again.
__________________
blueboy758 is offline   Reply With Quote
Old 02 August 2012, 15:46   #8
Member
 
Hightower's Avatar
 
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,866
To be fair, you've had this problem since February and have spent money on plugs etc trying to fault find. These are very technical engines and based on the fact the early ones had problems and were pretty fragile I would bite the bullet. If I were you, I would find a good Evinrude dealer and pay them to sort it before it damages your engine.

It's got to be money well spent in the long term.
__________________
Andy

Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
Hightower is offline   Reply With Quote
Old 02 August 2012, 16:04   #9
Member
 
Country: UK - Scotland
Town: Glasgow
Make: Humber Ocean Pro 6.3
Length: 6m +
Engine: Suzuki 140
Join Date: Aug 2002
Posts: 43
I had a similar problem with a 90 ficht i owned, and after changing HT leads and coils, it turned out to be a plug!...
It is a pain to swap the plugs around due to the indexing, but it might be worth getting another couple of plugs, to try and track down the problem.

I when back to basics, and ran the engine on idle and pulled off and replaced the HT leads in sequence until i found the "rogue" plug...funnily enough the engine ran fine at idle on 3 cylinders...but stalled when it went down to 2 cylinders.
Obviously use well insulated pliers when pulling the HT leads off by the cap...a belt from an HT lead does nip a bit!!...

Good luck...
__________________
Tarbh is offline   Reply With Quote
Old 02 August 2012, 19:46   #10
Member
 
blueboy758's Avatar
 
Country: UK - England
Town: Thornaby
Boat name: Storm
Make: Humber Ocean Pro 6.5
Length: 6m +
Engine: Suzuki DF 150
Join Date: Jan 2008
Posts: 355
I think I'll have to do what you say and a process of elimination then bite the bullet as people say...... Think I am just trying to clutch that last straw.
__________________
blueboy758 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off




All times are GMT. The time now is 10:37.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.