Evinrude 235 tried everything, no luck

2

22ISLANDER

Seaman
Joined
Jun 24, 2007
Messages
53
Re: Evinrude 235 tried everything, no luck

From what you describe, I think it is a carburator issue. All the plugs should look the same. I would pull the carbs off and clean them.

If you are going to hook up an external tank, throw in some seafoam, that stuff works great, and might clean thinks up.

Other than that, I would check for spark output, these engines run like crap if the ignition system is not putting out full spark.

Is this the 235 that was for sale on Craigslist in the treasure coast area ?
 
tashasdaddy

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: Evinrude 235 tried everything, no luck

agree and do a link n sinc.
 
HighTrim

HighTrim

Supreme Mariner
Joined
Jun 21, 2007
Messages
10,486
Re: Evinrude 235 tried everything, no luck

...and put those t stats back in
 
HighTrim

HighTrim

Supreme Mariner
Joined
Jun 21, 2007
Messages
10,486
Re: Evinrude 235 tried everything, no luck

Best advice would be to invest in a FACTORY OEM SERVICE MANUAL.

Check www.ebay.com, or www.outboardbooks.com, or right here on iboats. It will pay for itself a million times over, and is needed if you are going to do a linc n sync.

Check out the FAQ here on iboats for Joe Reeves WOT Timing Procedure
 
E

emdsapmgr

Supreme Mariner
Joined
Dec 9, 2005
Messages
11,551
Re: Evinrude 235 tried everything, no luck

The 1 1/4 carbs are not the right ones. These carbs are restricting air and fuel flow to the engine. Those size carbs are more typical of a 150. Should be the 1 3/8". It will absolutely affect the way the engine runs. There were two types of 235's in the 1985 model year. The basic 235 and the 2.6. They use different jetting/carbs. Post the model number.
 
C

CharlieB

Vice Admiral
Joined
Apr 10, 2007
Messages
5,617
Re: Evinrude 235 tried everything, no luck

You told on yourself (which was good) you did not remove the jets to clean them. Youor diagnosis of lack of fuel is correct, proven by your spraying fuel into the bottom carb and it took off.

Carb size can make a difference in peak power, however proper fuel flow is critical with ALL carbs. Clean the jets. You may be surprised at how well it runs. A smaller carb maintains higher air velocity at lower speeds, making an engine more responsive and increases fuel economy.

Clean the carbs and try it before you condemn them and rush out to buy another set, the performance difference is not that much.
 
E

emdsapmgr

Supreme Mariner
Joined
Dec 9, 2005
Messages
11,551
Re: Evinrude 235 tried everything, no luck

Hard to tell what year you have from the serial number. Pls post the model number. The two temp senders on the engine heads do not send a variable signal for gauge operation. They are a simple on-off switch, wired in series and will close to ground at 212 degrees and open at around 175. The tell the hot horn when to sound. They are not designed to run a temp gauge. If the gauge does peg, that would indicate to me that the engine is overheating (212 degrees) at that point. I would reconnect them both to the original harness and make sure your horn is working. If it is overheating, that could be part of your operating problem.
 
E

emdsapmgr

Supreme Mariner
Joined
Dec 9, 2005
Messages
11,551
Re: Evinrude 235 tried everything, no luck

The up and down rpms may be an indication that the carbs are running out of fuel. When running full speed, try pumping the fuel hose primer ball. It will force fuel around the pumps into the carbs. If it stays running at full throttle while pumping, you may have a weak fuel pump.
 
M

mikesea

Lieutenant Commander
Joined
Oct 1, 2006
Messages
1,830
Re: Evinrude 235 tried everything, no luck

You might also be losing or leaking spark from a cyl.be sure the wires are good and all connections without rust or corrosion.Those seadrives were notorious for getting water into the cowl area (I had 3 of em)causing connections to rust,take them apart and look real good,if your coil grounds are bad clean them
 
E

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: Evinrude 235 tried everything, no luck

I don't know if you have the parts manual for your motor, but you can print it from the Crowley Marine Site if it helps. I have not been able to find the Sea Drive parts lists otherwise in the original format: http://www.crowleymarine.com/omc_sea_drive_parts.cfm
 

Attachments

  • 1985 SeaDrive2.jpg
    1985 SeaDrive2.jpg
    69 KB · Views: 0
You must log in or register to reply here.
Top