suzuki 40 help...

[jsb91010]

i have a thread at 2cool and TFF, here's the links http://2coolfishing.com/ttmbforum/showthread.php?t=164362, http://texasfishingforum.com/forums/ubbthreads.php/topics/2303598/1, but basically i got a suzuki 40, early 80's model...long story short i bought it and it wasn't running right, was told it needed carb rebuild, took it to a mechanic who said he did that, also checked compression said it was good...now i got the boat back and took it to the lake, started up just fine, ran just fine...FOR ABOUT 3 minutes..made it halfway across the lake, then it just sounded like it ran out of gas, or just lost power or something, just died not immediately but gradual decrease in power until it died...checkd all the obvious things like the bulb it was primed, all that...was sounding like it wouldn't crank over so we loaded it back up and came home...got home and hooked it up to the hose, it cranked over and started for a second then died...then wouldn't crank again so i stopped... any suggestions guys? it will start only after it has been sitting for a while, it runs for 10 seconds or so, then dies and will not crank over until it sits again...to me this is sounding like a carb still? getting too much gas? any help and/or suggestions are welcome........... just recently i took the carb off and made sure it was all clean and the float wasn't stuck...everything looked clean and not stuck...I did notice i got it started and while running for 5-10 seconds i no longer have a pee stream...the pee stream WAS working the other day and even last night when i had it started for a few seconds...today..NOTHING

 

[deejaycee_2000]

Re: suzuki 40 help...

sounds like the fuel pump ..... do you have enough ventilation at your fuel tank?

 

[jsb91010]

Re: suzuki 40 help...

well...I have the vent cap open on the gas tank, if that's what you mean?

 

[deejaycee_2000]

Re: suzuki 40 help...

yep that is what i mean, the tank needs to be breath but in the fule line itself needs to be no leaks ..... have a look at your fuel pump .....

 

[sturdavj]

Re: suzuki 40 help...

Not sure where you are on this motor, I have read though your posts, links. You may have done this and I did not see it. But has the fuel pump been checked out, maybe press test ?

 

[jsb91010]

Re: suzuki 40 help...

no, i have not checked out the fuel pump, or even looked at it really...I couldn't even tell you where it's located :redface: ...what makes you guys think it's teh fuel pump? just curious im still open for anything...my next step was getting the water pump kit and dropping the lower unit and doing that replacement...what do you guys suggest?

 

[James R]

Re: suzuki 40 help...

You have done part of the routine for getting the motor in shape but not all.
Routine. Clean and ovehaul the carb. Set float to factory specs..
Remove and clean the bowl filter. With the fuel line disconnected at the carb, pump fuel using the primer bulb. This will flush the the line and the pump.
Remove the pump and inspect the diaphragm. If it is sagging replace it.Hook up the fuel system and check for leaks by using the primer bulb.
Remove the lower unit. Replace the impeller and anything else that may be worn.
If the impeller is missing pieces, chances are that they are lodged in the motor water ways. Removing the thermostat and carefull back flushing with water up the telltale nozzle and down the thermostat cavity and forward flushing up the delivery tube will usually clear the debris. Failing that the motor needs to be torn down.
Drain the oil from the lower unit and look for metal particles and water in the oil. Water in the oil will make the oil go milky.
If there is water in the oil then attention to the seals is in order. Metal particles in the oil indicates wear. Replace the oil with fresh lower unit oil.
Use an impact scewdriver to remove the oil plugs.
Of course the manual for your motor is an essential.
Good luck and happy boating.
Jim.

 

[jsb91010]

Re: suzuki 40 help...

I have taken off the lower unit and checked the impeller and it doesn't look broken or torn or anything...but the edges where on each blade should be raised, are definetely worn down...I am trying to find the right parts for my engine online but's difficult not knowing the exact year engine I have...I think I have it narrowed down to 1980-1982...I did change the lower unit oil when I bought the boat and since then have only ran it on the water for that couple minutes before it died..should I still do that? I did disconnect the lines and made sure they ween't clogged up on the fuel pump and carb and stuff...I will go back out and pump the bulb with the line to the carb off and see whathappens...I get plenty of gas inside the carb when you pump the bulb..eventually you can see gas just puddling up a little inside the carb... thanks for the tips

EDIT : just took the line to the carb off...squeezed bulb and i got gas shooting out of the line...

 

[James R]

Re: suzuki 40 help...

In any event please replace the impeller and if the stainless parts are worn replace those also. Most often you will get a strong jet from the telltale. I have known them to have a weak jet at slow run, improving as the revs increase.
Don't run the motor for more than a few seconds without a telltale showing.
You risk overheating. If you manage to get the water flow back you can test the fuel pump by simply squeezing the primer bulb if the engine starts to die.
If it picks up chances are that the pump needs attention.
With an old motor and not knowing when the pump was last serviced I would repair or replace the pump anyway. A few bucks on parts beats getting stuck on the water.
Suzuki made some changes to their motors but usually stayed with a design for several years.
I have had to look at the parts drawings and compare the motor to them to come up with the year model group in order to get parts.
Color and decal design can also help to determine year.
Go to www.brownspoint.com.

 

[jsb91010]

Re: suzuki 40 help...

inally got my impeller in the mail replace that, the gasket and the key...i got a good pee-stream now...engine started...is running kinda ruff...like it wants to die then will rev up, and so on...i had it running and let it run for bout 5 minutes on the muffs...then i noticed smoke coming from spark plug area...the plugs are HOTT, i mean hott can't even touch them hot...so is the place where the plugs screw into, that whole area is HOTT...any ideas?? once i saw smoke I immediately turned the engine off...pleeease oooh please tell me im not screwed..AGAINN!!!! this is where it was hott

 

[jsb91010]

Re: suzuki 40 help...

bump...

 

[jsb91010]

Re: suzuki 40 help...

still haven't figured it out guys...after i got it started and it smoked, i ordered me new head gasket and cover gasket and new t-stat...replaced all and it starts up now, but NOW i have no pee-stream? Any info you guys could give me would be great, im thinking i gotta take the lower unit off again and look harder? after i installed the new impeller i had a pee-stream, then after the gasket/tstat install...lost pee stream!

 

[James R]

Re: suzuki 40 help...

It may be just dirt blocking the little telltale nozzle. If you have a plastic tube from a WD40 can or similar start the motor and poke up the nozzle. If there is a blockage this will prbably clear it.
With a cooling problem it is best to monitor the temperature by putting you hand on the top of the cylinder. If you have no stream and it starts to get hot shut the motor down and start looking.
When you took the pump apart was the SS plate or the cup badly grooved.
If this was the case then you will loose water pressure and you will need to replace these. The muffs can fool you into thinking you have a good pump so I always use a barrel full of water and get the pump below the water level.
Incidentally does the motor have its original paint? The color can help in identifying the year of manuf'.

 

[jsb91010]

Re: suzuki 40 help...

james r...thanks for responding..the motor is painted blue...it's'80-'82 is the year...also...I took off the lower unit and i got my water hose sprayer and turned the hose on full blast...stuck the tip into the hose that carries water from the pump...water was rushing out the pee hole...does that make sense? therefor i don't think the pee hole is clogged at all...what would happen if i put the impeller in backwards or something? it can't go upside down cuz it has these groves that line up, but i could have "spun" it to get it in there backwards maybe?

 

[James R]

Re: suzuki 40 help...

When you install an impeller put the impeller on the shaft locating it on its key.
Take the housing and apply a little waterproof grease to the cup. Lower the housing down the shaft to the impeller. As you press the housing down on the impeller rotate the shaft clockwise looking from the top and press the housing all the way down. Fasten the housing down. Do not ever rotate the shaft anticlockwise or you may damage the impeller and possibly reverse the blades resulting in a poor flow. When you replaced the impeller was the cup or plate scored. If either were scored then this could account for the poor water flow. We have to get the cooling right before anything else can be done.