Reply
 
Thread Tools Search this Thread
 
Old 09 November 2004, 17:34   #31
Member
 
Country: UK - Scotland
Town: Ardnamurchan
Make: Domar Corsair
Length: 4m +
Engine: Mercury 20HP
MMSI: What?
Join Date: Aug 2004
Posts: 215
Pff, i dont get wet at sea... just take it easy and plan carefully (i.e. blue sky, 20C , slight breeze..)

anyway, dont really wear waterproofs all day
__________________

__________________
Mr-d is offline   Reply With Quote
Old 10 November 2004, 10:56   #32
Member
 
Country: UK - Scotland
Town: Ardnamurchan
Make: Domar Corsair
Length: 4m +
Engine: Mercury 20HP
MMSI: What?
Join Date: Aug 2004
Posts: 215
Haha!!!! im a genious! (with the help of you guys )

Thing nuked the pullstart, grabbed hammer and hit the pin back in place, its fine now... pulled choke out, pulled 3x, it fired 3x (on 1 cylinder) choke in, pulled 2x and it started to run on 1 cylinder! it ran about 20seconds and then stopped (it sounded very uneven though..)

However.. i never noticed any water coming out of the tell tail, perhaps not enough revs to draw it up? (its in neutral, prop cant spin in the bucket.. its to small..)

it was cylinder #1 that fired and ran, i took the plug out right after and felt it, it was really cold but a tad warmer than the other plug which had not ran at all.... think it died of fuel starvation..

Now, a question, is it alright to run the engine without propellor or will this effect the waterpressure that enters the water pump?

what i really want to do is fire her up and just rev it for a few minutes (IF any water comes out the tell tail..) and see what happens!
Going to increase the 1 turns to 2 turns now and see what happens

(Perhaps a compression check is a good idea.. but i have nothing to check it with that fits into the sparkplug hole...)

Thanks
Daniel.
__________________

__________________
Mr-d is offline   Reply With Quote
Old 10 November 2004, 13:43   #33
Member
 
Pete7's Avatar
 
Country: UK - England
Town: Gosport
Boat name: April Lass
Make: Moody 31
Length: 9m +
Join Date: Aug 2001
Posts: 4,850
Daniel don't even think of starting it without the water intakes being submerged in a bucket, that rubber impellor won't last very long without water to lubricate it. Worse still was watching a friend strip a V6 power head because part of the water pump rubber broke off and got stuck in the water galleries. It was only 130 for a gasket set

Is there still a spark from the second cylinder ?

What are you adjusting from 1 turns to 2 turns ?

It will take a while for water to fill the power head and start coming out of the tell tale.

Pete
__________________
Pete7 is offline   Reply With Quote
Old 10 November 2004, 14:06   #34
tue
Member
 
Country: UK - England
Town: Paignton, Devon
Make: Chinook and Viking
Length: 7m +
Engine: 150 Etec + 125 Merc
Join Date: Jul 2003
Posts: 526
If you are adjusting the carb. The starting point should be 11/2 turns out. Then just try it from there. If its running on only 1 cylinder its not likely to be just the mixture. Was the plug wet on the cyl 2 when you took it out?
__________________
**Paul**
Brixham BSAC
tue is offline   Reply With Quote
Old 10 November 2004, 15:04   #35
Member
 
Country: UK - Scotland
Town: Ardnamurchan
Make: Domar Corsair
Length: 4m +
Engine: Mercury 20HP
MMSI: What?
Join Date: Aug 2004
Posts: 215
It started at 1 1/2 and then died after 20 seconds, the thing is (was) in a 60/80L dog food container with the top of the exhaust JUST above the water (just like it is when on the boat)

Spark is still there on the second cylinder... both plugs were dry, but a slight smell of petrol was coming out... lack of the tell-tail must be due to insuficient pressure to push it up the tube.. (and it was only idle anywa

So, its 2 turns off (The air/fuel mixture i believe it is)
and it only backfires through exhaust, the pull start is back to a normal resistance now... and something i noticed was that the bulb deflates itself.. it stops backfiring, and then you pump it again till its solid and then it starts backfiring again...

the fuel pump diaphragm was still intact when i took it out and stuck it back in... and the engine is at a slight angle, with the air intake lower than the back end of the carb that connects to the engine, so if it was overflowing it should drip back out , and its not...

I remember it always soaking the plugs right up when it did not start (and leaving black junk on the plug).. it doesn't do this anymore... instead there is just a slight smell of petrol... and the top of the piston looks cork dry...
(however how did it run for 20 seconds in that case? on vapour?)

Im off to the Isle Of Rum for a month i think, might come back inbetween, have no idea if there is an easy internet access there or not.. we shall see...

engine is back in the shed now waiting for daddy to come back home
Thanks for all your help, and keep the suggestions coming!
__________________

__________________
Mr-d 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





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 20:43.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.