[SOLVED] 1986 johnson 90 hp v4

gberch · 09-11-2009, 06:13 AM

i have bought a 1986 johnson 90 hp v4 that has set up for 10 years -i rebuilt the carbs ,new spark plugs --and it cranked ---but would only run using the choke. i took the carbs back off and checked them -i had missed two jets ---it is extra clean now but it floods out easy and sometimes will not crank at all.-i know i have the floats set correctly---any suggestions?

macadameane · 09-11-2009, 11:02 AM

Does you carb have an idle adjustment screw? I read before tuning it up to have it at about a turn and a half open (but that is for my B&S riding mower engine, so it might now be the same.

In the end it didn't help my case because I wasn't getting great compression. I had to change the piston rings, they were really worn.

gberch · 09-11-2009, 12:04 PM

preset-no adjustment screws

after i posted the question -i thought about it --i am going to change out the gas today --it has been setting for awhile--i might have been chocking it too much after i rebuilt the carbs.--we will see this weekend

i was really shocked when it cranked at all -it has been sitting out under some pine trees since 1999--i have replaced all the gas lines -replaced the fuel pump --and changed the plugs --

gberch · 09-15-2009, 07:07 AM

I have narrowed down the problem --electrical--Now I am not getting a spark --I will pull the flywheel this weekend and see if I can figure it out .----ANY SUGGESTIONS ?

macadameane · 09-16-2009, 10:33 AM

is it still turning over?, or are you just not getting a spark? Also, is it that way with all 4 cylinders?

gberch · 09-21-2009, 06:36 AM

Got her fixed ---i took off the fly wheel and cleaned it up --hot battery --runs like a new one --only other thing I have to fix is the cables --they are stiff and will not work correctly--Do I have to replace them or is there a way to correct them ---I have sprayed wd-40 and worked them but they still act as if they are locked up --remember this boat set up for 10 years ,

macadameane · 09-22-2009, 07:13 AM

WD-40 is great for rust and corrosion, but it is a poor lubricant in the long run. In can actually get sticky. Get a silicone spray and try that after clearing corrosion (if any).

gberch · 09-23-2009, 06:20 AM

Thanks --I will get some and try this weekend

gberch · 09-28-2009, 09:07 AM

I'm told that i must replace the cable -about 150 dollars ----Is there another way ? can it be soaked or lubed after i get it off ?

This is the steering cable .

**Basementgeek** · 09-28-2009, 01:53 PM

I like to use PB Blaster. It is better than WD 40:

http://www.acehardwaresuperstore.com...70.html?ref=42

It should be available at most automotive part stores.

BG

macadameane · 09-29-2009, 09:40 AM

Hmmm.... I'm not sure how exactly the thing's moving, but it its a cable that need to perminently soak up something like that, some good ol' engine grease rubbed into it might be better (unless its somewhere where it would just burn easy), problem with Silicone (my previous suggestion) is that it may come out over a short time.

gberch · 10-05-2009, 06:13 AM

I decided to replace it instead of trying to fix it---thanks for all the help--gb

**Midnight Tech** · 10-05-2009, 07:15 AM

Marking solved and closing...

09-11-2009, 06:13 AM	#1 (permalink)
gberch Registered User Join Date: Sep 2009 Location: sw mississippi Posts: 8 OS: xp	[SOLVED] 1986 johnson 90 hp v4 i have bought a 1986 johnson 90 hp v4 that has set up for 10 years -i rebuilt the carbs ,new spark plugs --and it cranked ---but would only run using the choke. i took the carbs back off and checked them -i had missed two jets ---it is extra clean now but it floods out easy and sometimes will not crank at all.-i know i have the floats set correctly---any suggestions?

09-11-2009, 11:02 AM	#2 (permalink)
macadameane Registered User Join Date: Dec 2008 Posts: 14 OS: Windows XP SP3	re: 1986 johnson 90 hp v4 Does you carb have an idle adjustment screw? I read before tuning it up to have it at about a turn and a half open (but that is for my B&S riding mower engine, so it might now be the same. In the end it didn't help my case because I wasn't getting great compression. I had to change the piston rings, they were really worn. Last edited by macadameane; 09-11-2009 at 11:04 AM. Reason: further details

09-11-2009, 12:04 PM	#3 (permalink)
gberch Registered User Join Date: Sep 2009 Location: sw mississippi Posts: 8 OS: xp	re: 1986 johnson 90 hp v4 preset-no adjustment screws after i posted the question -i thought about it --i am going to change out the gas today --it has been setting for awhile--i might have been chocking it too much after i rebuilt the carbs.--we will see this weekend i was really shocked when it cranked at all -it has been sitting out under some pine trees since 1999--i have replaced all the gas lines -replaced the fuel pump --and changed the plugs --

09-15-2009, 07:07 AM	#4 (permalink)
gberch Registered User Join Date: Sep 2009 Location: sw mississippi Posts: 8 OS: xp	re: 1986 johnson 90 hp v4 I have narrowed down the problem --electrical--Now I am not getting a spark --I will pull the flywheel this weekend and see if I can figure it out .----ANY SUGGESTIONS ?

09-16-2009, 10:33 AM	#5 (permalink)
macadameane Registered User Join Date: Dec 2008 Posts: 14 OS: Windows XP SP3	re: 1986 johnson 90 hp v4 is it still turning over?, or are you just not getting a spark? Also, is it that way with all 4 cylinders?

09-21-2009, 06:36 AM	#6 (permalink)
gberch Registered User Join Date: Sep 2009 Location: sw mississippi Posts: 8 OS: xp	re: 1986 johnson 90 hp v4 Got her fixed ---i took off the fly wheel and cleaned it up --hot battery --runs like a new one --only other thing I have to fix is the cables --they are stiff and will not work correctly--Do I have to replace them or is there a way to correct them ---I have sprayed wd-40 and worked them but they still act as if they are locked up --remember this boat set up for 10 years ,

09-22-2009, 07:13 AM	#7 (permalink)
macadameane Registered User Join Date: Dec 2008 Posts: 14 OS: Windows XP SP3	re: 1986 johnson 90 hp v4 WD-40 is great for rust and corrosion, but it is a poor lubricant in the long run. In can actually get sticky. Get a silicone spray and try that after clearing corrosion (if any).

09-23-2009, 06:20 AM	#8 (permalink)
gberch Registered User Join Date: Sep 2009 Location: sw mississippi Posts: 8 OS: xp	re: 1986 johnson 90 hp v4 Thanks --I will get some and try this weekend

09-28-2009, 09:07 AM	#9 (permalink)
gberch Registered User Join Date: Sep 2009 Location: sw mississippi Posts: 8 OS: xp	re: 1986 johnson 90 hp v4 I'm told that i must replace the cable -about 150 dollars ----Is there another way ? can it be soaked or lubed after i get it off ? This is the steering cable . Last edited by gberch; 09-28-2009 at 09:09 AM.

09-28-2009, 01:53 PM	#10 (permalink)
Basementgeek Moderator, Home Support Join Date: Feb 2005 Location: Central Ohio, USA Posts: 1,457 OS: XP Pro SP2/Vista Ultimate SP2 Blog Entries: 3	re: 1986 johnson 90 hp v4 I like to use PB Blaster. It is better than WD 40: http://www.acehardwaresuperstore.com...70.html?ref=42 It should be available at most automotive part stores. BG __________________ Donating to the forum keeps TSF free for all. Proud member of ASAP

09-29-2009, 09:40 AM	#11 (permalink)
macadameane Registered User Join Date: Dec 2008 Posts: 14 OS: Windows XP SP3	re: 1986 johnson 90 hp v4 Hmmm.... I'm not sure how exactly the thing's moving, but it its a cable that need to perminently soak up something like that, some good ol' engine grease rubbed into it might be better (unless its somewhere where it would just burn easy), problem with Silicone (my previous suggestion) is that it may come out over a short time.

10-05-2009, 06:13 AM	#12 (permalink)
gberch Registered User Join Date: Sep 2009 Location: sw mississippi Posts: 8 OS: xp	re: 1986 johnson 90 hp v4 I decided to replace it instead of trying to fix it---thanks for all the help--gb

10-05-2009, 07:15 AM	#13 (permalink)
Midnight Tech Admin/Head GreaseMonkey/Igor's alter ego/Grand Exalted PoohBah Join Date: Dec 2001 Location: SC Posts: 2,915 OS: Windows XP Home/Pro SP3/Windows 98SE/Fedora Core 6/RH 7.2 with Autopoint/TAMS II	Re: 1986 johnson 90 hp v4 Marking solved and closing... __________________ Please post all questions in the appropriate forum. Questions sent by email or PM will not be answered. Sharing my life...with my Imzadi! Interested in Trek gaming? Check out the Dynaverse! Proud supporter of the Carolinas Aviation Museum. If we have helped you in any way, please donate to keep TSF up and running!