ok, pulled head...trying to remove powerhead, need help

[peacekeeper6]

took her out into the water and she ran like a top for id say 2 minutes. then started bogging down and ran kinda like a skunk for another 2 minutes. then i throttled back and it died. would not startback up. Well before i started it on the muffs and it had a miss in it so i isolated one cylinder and found out there was no spark. fixed that and it kinda jumped at idle. went away at high RPMs, is this jump normal? after it died it would not start again. I have even compression, spark on all 6 but the battery was kinda dead. tried it again and still cant get it to start. just rebuilt all 3 carbs. my last resort is the fuel pump. hheres my questions. i found that the top butterfly had some off the carb linkage so i am associating that to my bogging preformance. \

what would cause it to just die at idle and run rough at idle and not start again?
on this johnson 84 235 outboard is it normal for it to kinda jump at idle?

 

[tashasdaddy]

Re: ok, need some advice, just did a test run on my new to me boat

Re: ok, need some advice, just did a test run on my new to me boat

whats your compression, if the top carb was not delivering fuel, it was not delivering oil. could have toasted the top 2 cylinders. it requires a fully charged battery to start, has to turn +- 300 rpms to start.

 

[peacekeeper6]

Re: ok, need some advice, just did a test run on my new to me boat

Re: ok, need some advice, just did a test run on my new to me boat

ewww. didnt even think about that. it should ahve been delivering some oil, butterfly wasnt opening that is all. will check that. i started by cleaning every connection.

 

[peacekeeper6]

Re: ok, need some advice, just did a test run on my new to me boat

Re: ok, need some advice, just did a test run on my new to me boat

ok, 75 on all cylinder 50 on the top facing the motor on the left, 65 on the top facing the motor on the right...toasted cylinders sounds like. next question i have two 200hp 1990 motors that currently dont have spark, will one of these motors fit on my 20" shaft? they have 99 compression accross the board. and are newer. please let me know. thanx in advance. will pull this power head and rebuild as required.

 

[peacekeeper6]

Re: ok, need some advice, just did a test run on my new to me boat

Re: ok, need some advice, just did a test run on my new to me boat

bump

 

[tashasdaddy]

Re: ok, need some advice, just did a test run on my new to me boat

Re: ok, need some advice, just did a test run on my new to me boat

i don't understand the question, put 200 hp power head on 235 motor, or replace the complete motor,

 

[peacekeeper6]

Re: ok, pulled head...is this block toast?

Re: ok, pulled head...is this block toast?

ok, pulled the head this is what i found, i was gonna rebuild this block but to me this cylinder looks trashed. can i put one of the 200 power heads onto the 20" shaft from my 235?

 

[1730V]

Re: ok, pulled head...is this block toast?

Re: ok, pulled head...is this block toast?

Sorry, that one is pretty much done for. Can't answer the powerhead swap question.

 

[peacekeeper6]

Re: ok, pulled head...is this block toast?

Re: ok, pulled head...is this block toast?

yea thats what i figured, that sux, have to try and get a new head or swap this one out with one of the 200's, bummer.

 

[peacekeeper6]

Re: ok, pulled head...is this block toast?

Re: ok, pulled head...is this block toast?

a video of it

 

[Dhadley]

Re: ok, pulled head...is this block toast?

Re: ok, pulled head...is this block toast?

It's not really "throw away" yet. A flanged sleeve will take care of the bad cylider sleeve. Or another 160 cid block.

The 200, or any 149 cid block, is not a direct bolt on to that adaptor. Your 235 is different. How much of the 200 do you have?

 

[peacekeeper6]

Re: ok, pulled head...is this block toast?

Re: ok, pulled head...is this block toast?

the whole 200, well two of them. 25" shafts though.

 

[peacekeeper6]

Re: ok, pulled head...is this block toast?

Re: ok, pulled head...is this block toast?

It's not really "throw away" yet. A flanged sleeve will take care of the bad cylider sleeve. Or another 160 cid block.

The 200, or any 149 cid block, is not a direct bolt on to that adaptor. Your 235 is different. How much of the 200 do you have?

whats a flanged sleeve?

 

[peacekeeper6]

Re: ok, pulled head...is this block toast?

Re: ok, pulled head...is this block toast?

do i have to remove the middle cowling to get to all the bolts? the last two nuts at the rear and the middle bolt at the rear are being a bear.

 

[wildmaninal]

Re: ok, pulled head...is this block toast?

Re: ok, pulled head...is this block toast?

whats a flanged sleeve?

I believe he is talking about a sleeve to place in the cylinder that is damaged on the power head, it's got a flange to sit down over the end of he cylinder if I'm not mistaken. Correct me if I'm wrong Dhadley. What's wrong with the other complete motors that you have mentioned they might be a cheaper or an easier fix.

 

[peacekeeper6]

Re: ok, pulled head...is this block toast?

Re: ok, pulled head...is this block toast?

thye dont have spark, but i have the parts off this motor to replace with if need be, i would love to just rebuild this one as i have never done it and always wanted to. from what i understnad the 200 isnt a plug and play replacement.

 

[peacekeeper6]

Re: ok, pulled head...trying to remove powerhead, need help

i pulled the 3 nuts off above the pan under the exhaust manifold. will try adn pull powerhead tomm AM with my handy dandy gantry i made.

 

[wildmaninal]

Re: ok, pulled head...is this block toast?

Re: ok, pulled head...is this block toast?

thye dont have spark, but i have the parts off this motor to replace with if need be, i would love to just rebuild this one as i have never done it and always wanted to. from what i understnad the 200 isnt a plug and play replacement.

You could fix the other 200 for the time being, expecially if it is just a spark problem, use it as a backup motor and rebuild the other in the mean time, just my 2cents. Expecially if the parts will interchange.

 

[peacekeeper6]

Re: ok, pulled head...is this block toast?

Re: ok, pulled head...is this block toast?

the 200 is a 25" shaft, wont work on my boat.

 

[wildmaninal]

Re: ok, pulled head...trying to remove powerhead, need help

Depending on the transom depth, I had the info written down 17" to 22" transom depth is long shaft, I don't know what I did with the info I had on the measurements. But I tried, knowing me I would still use the motor long shaft or not, until I had the other fixed.