Wot Gone

[BASSOUTLAW]

I Have A 1978 115 V-4 I Was Given The Wrong Spark Plugs And Placed Them In I My Tune Up. Went Out On The River Several Time And It Ran Great Then I Was Running Wot And I Lose All Power. It Did Restart But Cant Get Wot Anymore. ONE OTHER THING I DID NOTICE IS THAT MY MOTOR HAS A LOT OF VIBRATION. I'VE CHECKED THE GAS AND GAS LINE ALL OK

 

[tashasdaddy]

Re: Wot Gone

welcome to iboat, check the compression with all the plugs out, atleast 4 cycles, record the readings, over 100psi and with in 10% of each other. check spark with a spark tester ($10 autoparts store) blue spark atleast 1/2 inch. did you put the right plugs in. if all is good, that a induction timing light out with you, when it acts up, connect the light to the battery as usual, the check spark on each spark plug wire. will isolate problem is it's electrical. post back the results.

 

[BASSOUTLAW]

Re: Wot Gone

I Did A Compression Test It Showed 131-130-120-115 Is This A Desent Reading. Haven't Got A Chance To Try The Other Things You Suggested Yet. Will Get To It On The Weekend. Thanks

 

[tashasdaddy]

Re: Wot Gone

the 131& 130 are excellant but having the 10 & 15 psi drop on the other 2 isn't good. they all should be with in 1%of each other. they're close to the 10%. the engine probably has never been decarboned, with Seafoam, this cleans the carbon out, possibly free up the rings, and get the compression back up..there are 2 post on decarb in this link

http://forums.iboats.com/forumdisplay.php?s=&f=31&page=1&pp=50&sort=lastpost&order=desc&daysprune=-1

 

[BASSOUTLAW]

Re: Wot Gone

I Will Give This A Shot . I'll Let You Know The Results. Thanks For The Info.

 

[BASSOUTLAW]

Re: Wot Gone

I Did The Decarb Results Are The Same. Still Lot Of Vibration. I Did Notice That Water Coming Out Of 2 Holes On The Back Of Motor Under The Hood, These Holes Are Also Black In Color.

 

[ezeke]

Re: Wot Gone

Which pistons are low? You can't begin to diagnose without knowing. Top right is 1, top left 2, etc.

When did you replace the thermostats? What spark plugs/gap are you using now?

 

[DHPMARINE]

Re: Wot Gone

When I get compression readings in a decending order,I go back to the first cylinder checked and do it again.If it is NOW down,there is a battery problem.If it is the same as first test,you know the readings are correct,unfortunately.

Just a tip.

DHP

 

[BASSOUTLAW]

Re: Wot Gone

Which pistons are low? You can't begin to diagnose without knowing. Top right is 1, top left 2, etc.

When did you replace the thermostats? What spark plugs/gap are you using now?

When facing motor from rear top left is top left131-bottom left 130-top right 120- bottom right 115. I've never changed the themostats. the spark plugs are set as recommed by the manufacture 0.040. What results will replacing the thermostats do?

 

[ezeke]

Re: Wot Gone

My first impulse is that you are running cold and probably all of the time.​

At first you were probably just cold on the right bank, cylinders 1 and 3, but eventually both thermostats would or will stick open. Running cold contributes to carbon build up, indicated by frequent fouling of the spark plugs. The cold condition also causes carbon build up on the pistons and rings and on the interior of the firing chambers and exhaust. It also causes excessive wear on the cylinder walls because the cold cylinder is not shaped correctly for the hot piston with the overexpanded rings.​

The first thing to do is to replace the thermostats and thoroughly clean the thermostat housing and all of the parts. This will get the engine to run at the correct temperature. Secondly, do a thorough decarb using Dr. Bob Dunkelberger's method, to see if you can even up the compression. With a little luck, that may work for you.​

" Do-It-Yourself Engine Tip; A Simple and Cost Effective Way to De-Carbon an Outboard By Capt. Bob Dunkelberger dunk75@comcast.net This works for Carbed, EFI, Ficht, HPDI, Opti-max and even 4-strokes... and should be administered after every 50-60 hours of use.

First you need a separate small fuel tank. One of those 3-gallon red Tempos works well or an empty gallon milk jug in a pinch, but it might be a bit messier.

I use Seafoam over the OEM (original equipment manufacturer) stuff like OMC Engine Tuner or Mercury Power Tune. Note: in the last few years they changed the formula and you have to let them sit up 12 hours. Who's got time for that? Seafoam does the job in 15 minutes and can be purchased from NAPA, Car Quest or other auto stores.

You'll need 3/4 gallon of gasoline and one 16oz can of Seafoam for each engine. Don't forget to add 3oz of oil if you are pre-mixing in a carbed engine. Use a 3 ft piece of fuel hose off the small tank. Connect this tank to your engine by pulling off the main tank fuel hose from the intake side of your water separating fuel filter and plug the hose off the small tank onto that fitting. Or you can separate the fuel line on the tank side primer ball, so you can still use your primer. If your engine has a fuel plug then you will also need a fuel plug on the smaller tank's hose.

Start the engine, let it warm up and start pulling the mix into the engine. You may have to increase the idle to keep it running once she gets loaded with the Seafoam. Run the engine 15 minutes at the dock or just cruising around under 2500 rpm's. Then shut it down and let it sit for another 15 minutes.

Restart the engine; the smoke you see is the carbon burning off. Do the whole thing again and let her sit again for 15 more minutes. If she smokes after the second time do it again.

I've never seen one still smoke after three doses. (I bought a Bronco two years ago that had 95,000 miles on it. When I used Seafoam on it I had the neighbors hanging out of their front doors looking for where the fire was after I started it the first time there so much smoke)

The gallon mix should be just enough to do this 3 times. You don't need a wide-open throttle and you don't need to change the plugs. The plugs are cleaned at the same time as the combustion chambers. My suggestion is that every 50-60hrs is the optimal time to change plugs in most engines.
I cleaned an antique Evinrude once that had a 1/4" of solid carbon on the exhaust chamber walls by running a 1/2 gal of the aforementioned mix through it.

Seafoam, a great product, has been around since the 1930's and it's what they used when they were burning straight 4 stroke 40SAE oils in outboards.

For you guys with the 4 stroke outboards? Those engines work 10 times as hard as any auto engine ever will and they too will carbon up. Too many are under the assumption that it's totally the 2 stroke oil that causes the carbon, Wrong... it's also the additives they put in the fuels today. The carbon inhibitors in 2-stroke oil are there for this reason also. Remember when gasoline used to smell like gasoline, today it smells more like bad cologne.

For those guys that like to work the carbon treatment by spraying it down the carbs, Seafoam also comes in spray can called Deep Creep. It's the same stuff under pressure and notes on the can, "Oxygen Sensor Safe". After that, if your engine manufacturer recommends a daily additive treatment then do so. The tank and hose are a one-time purchase and the Seafoam is only costs $5-6.00 per can."

Note: Capt Bob Dunkelberger is a Marine Surveyor in New Jersey. dunk75@comcast.net
​

 

[BASSOUTLAW]

Re: Wot Gone

thanks i will give this a shot over the week end and reply back with results.