Back to square one 1995 175 evinrude intruder motor.

[jtcarter]

Well i'm right back where i started last year. This motor runs fine for the first couples of runs i make. I'll fish a spot for maybe a hour, then run to another one, fish for another hour. After about the third time i do this, the motor will stall when you try to accelerate. Its cool here so i don't think its the heat soak theory everyone's been laying on me. It also spits or lean sneezes after those runs but clears out and runs. This thing is a hoss up on top, but just doesn't like the gas after a few runs. I'm pretty much at the point were it has to be in the carbs. I've linked and sync'd and went through the carbs numerous times. I guess i could try changing the air bleeds and richen up the idle screw a turn. What a annoying deal this has been. I'm starting to think the plastic carbs are just horse sheet. Maybe changing the carbs over would be the fix, that would probably cost a fortune though.

Any suggestions before i wire dynamite to this motor and watch it go boom?

It was about 75 degrees today here in nashville, i guess heat soak could be possible, but i'm just not convinced it is.

 

[Faztbullet]

Re: Back to square one 1995 175 evinrude intruder motor.

Hey I am in Mt. Juliet, if it aint pouring rain monday shoot me a pm and I will look at it for ya!! I usually test @ Viverett or 7 points.

 

[jtcarter]

Re: Back to square one 1995 175 evinrude intruder motor.

Hey I am in Mt. Juliet, if it aint pouring rain monday shoot me a pm and I will look at it for ya!! I usually test @ Viverett or 7 points.

Well i appreciate it. I'm about at my wits end with this thing. I've went through everything on this thing. Plug wires are new, coils new, rebuilt carbs, new pack, new eye. Its been at two shops and both of them are stumped or idiots, i can't tell which one, lol. I heard everything from heat soak, to air bleed screws, carbs sucking air which they're not. It has the brown gasket between the manifold, new spagetti gaskets behind the carbs. Even took the bowls off and a omc mechanic told me to check the carb bowls for warp, did that, had to figure eight them on a peice of sandpaper until you couldn't slide a peice if paper under them. There wasn't much warp and it didn't take to much sanding. The thing i can't figure out is why it runs fine for awhile then starts that crap. New thermostats also. You name it i've about tried it on this thing.

 

[jonesg]

Re: Back to square one 1995 175 evinrude intruder motor.

If you're convinced its fuel delivery , not ignition, try a small 6 gal temporary gas tank with new fuel hose and primer bulb to isolate the fuel system.

I would still try a timing light on it when it starts acting up to make sure its not the ignition breaking down, could very well be.

 

[jtcarter]

Re: Back to square one 1995 175 evinrude intruder motor.

If you're convinced its fuel delivery , not ignition, try a small 6 gal temporary gas tank with new fuel hose and primer bulb to isolate the fuel system.

I would still try a timing light on it when it starts acting up to make sure its not the ignition breaking down, could very well be.

New rectifier, new stator, new pack. Its not ignition unless they sold me bad stuff. I thought at one time it was sucking air through the fuel line, but i've replaced everything except the pickup tube that goes into the tank. I took the tube out held my thumb over one end and blew through the other no air leak anywhere. Primer goes about half soft after a few runs, but they all do that. I'm stumped on this one. Might try the timing light thing again just to make sure.

 

[jj2643]

Re: Back to square one 1995 175 evinrude intruder motor.

im haveing the same problem with my 150 ....did u have any luck ????????????????? i cant figure it out

 

[jonesg]

Re: Back to square one 1995 175 evinrude intruder motor.

New rectifier, new stator, new pack. Its not ignition unless they sold me bad stuff. I thought at one time it was sucking air through the fuel line, but i've replaced everything except the pickup tube that goes into the tank. I took the tube out held my thumb over one end and blew through the other no air leak anywhere. Primer goes about half soft after a few runs, but they all do that. I'm stumped on this one. Might try the timing light thing again just to make sure.

its easy to get stumped if you don't don't do any tests.
again, a timing light will show if its dropping spark once its warmed up.
Once you eliminate ignition then fuel delivery is the obvious problem.

and yeh you can buy bum parts brand new.

 

[wyoming1954]

Re: Back to square one 1995 175 evinrude intruder motor.

Not a cheap fix by any means, check BruccatoSVS.com. He is making a complete EFI conversion for OMC V6's. May be the answer you are looking for but it is not a cheap kit.

 

[nymack66]

Re: Back to square one 1995 175 evinrude intruder motor.

Connect a cheap external tank for testing.
Install in line plug tester to each cylinder it will clearly show you if you are dropping a cylinder during the issues you reported. Cost 5.99 each worth every penny.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=4424
Compression check
Index your flywheel ( this is covered in the manual) and check for erratic firing could be a defective pack or faulty ground, you have spent a lot on parts so I will really start with the simple stuff.
All of the above is good pointers will very little cost..

 

[mikesea]

Re: Back to square one 1995 175 evinrude intruder motor.

how about your tank vent,if its not venting,your eng wont be able to suck the gas it needs,and may collapse the ball,to test,loosen the cap

 

[Faztbullet]

Re: Back to square one 1995 175 evinrude intruder motor.

This post goes back to March and the kits Tony Brucato makes are for 90 degree loopers not 60 degree..

 

[OzzieOzzieOzzie]

Re: Back to square one 1995 175 evinrude intruder motor.

G'day Mate, have you got this sorted yet?

 

[dish]

Re: Back to square one 1995 175 evinrude intruder motor.

Have you checked your vapour pump?The diaphram might be failing.I had alot of trouble with my 1997 150 evinrude.Thought it was OMS pump,air leak,carbs,primer bulb,ignition,turned out to be vapour pump failing.Replaced pump and problem solved.

 

[wires38]

Re: Back to square one 1995 175 evinrude intruder motor.

was there any gas leaking? my 93 150 johnson seems to be leaking gas all over all the carbs, cant see an obvious leak it just seems to be wetting all over the carbs?

 

[dish]

Re: Back to square one 1995 175 evinrude intruder motor.

I had abit of leaking out of the vapour pump seperator.Took the cover off it and checked the float and needle then put some gasget sealant around the flange and that stopped the leak.Pull the vapour pump apart and see if the diaphram is stretched.If the pump is failing the fuel system loses prime.Yours might be letting in a tiny bit of air.