gas ini carb but spark plug still looks new

[blademro]

i have an 85 hp chrysler outboard and on my number 3 cylinder i have gas in the carb and the carb just cleaned out put all back together and got it started back up needless to say on 2 cylinders stoped it after a day on the water with now power at all pulled the spark plug and looked like it just came out of the box brand new carb is sucking need help please anyone have any sugestion 145lb of compersion on each cylinder 2

 

[tater76]

Re: gas ini carb but spark plug still looks new

You have no spark from the sounds of it. You need to swap the bad coil with one of the known working ones (basically swapping positions). If you now have no spark from the non firing coil in another location This will tell you that the coil is bad. If it tests good you might have a bad cd unit.

 

[Jiggz]

Re: gas ini carb but spark plug still looks new

Start with the spark problem but if you said the plug looks like it just came out off a box (bone dry and shiny clean), it could be more than just a spark problem. Even without spark, the plug will display some kind of wetting or oil trace from the air-fuel mix. Unless of course you are just exaggerating that it looks so brand new. Anyways, spark tracing as mentioned by Tater is you initial best way to troubleshoot.

 

[jerryjerry05]

Re: gas ini carb but spark plug still looks new

Start with.Start the motor.As it runs pull each plug and see if it makes a difference.
Then check the spark.Get in-line sparkies, they work best.
Redo the carb cleaning.Possible the float/needle is stuck.Float needs adjusting.While carbs are off check the reeds. Check the diaphram.

 

[Jiggz]

Re: gas ini carb but spark plug still looks new

Caution. What Jerry meant to say is pull each spark plug cables not the PLUGS themselves. Just want to make that clear. Better yet as Jerry mentioned use a in-line spark tester! You can't go wrong and avoid damaging your coils.

 

[fucawi]

Re: gas ini carb but spark plug still looks new

BAD BAD ADVICE ...never pull off plug leads with the engine running or crank it with the leads off ..you stand a very very good chance of buggering the CD switch box ..always use a spark tester and you need a 1/4 in spark in air if it is to jump the plug under pressure .

 

[jerryjerry05]

Re: gas ini carb but spark plug still looks new

I've seen the factory tech do just that.While I was there they showed us how to do it while the motor was running.fucawiAH you might not know as much as you think.

 

[Sprky]

Re: gas ini carb but spark plug still looks new

Fucawi, your info is plain and simple inacurate!

 

[fucawi]

Re: gas ini carb but spark plug still looks new

for coil and magneto its ok but not for CDI ....
If you go into any good Marine shop they always put the plugs onto a set of spark gaps if they want to crank the engine because they know what might happen

 

[bentle]

Re: gas ini carb but spark plug still looks new

The plug that came out clean like new. Was it wet with fuel at all or dry. As I read your first post you said that while you were on the water you had to cylinders running and then no power. Does this mean you couldn't. (Power) meaning what exactly? No rpms at wot or no spark to any of your cylinders. If I understand you correctly then you have a fuel problem most likely a stuck needle valve and you will need to pull carb to inspect and clean. Not a good idea to run your motor if you are not getting fuel mix to that cylinder. While carb is off take a led flash light shine it up in the intake opening and check the reeds. If you have been running without fuel mix to that one cylinder then chances are it is damaged and will need to be repaired but only if it was run dry. A compression test may be need to isolate a problem there. Now if it is spark related then get the spark testers and test each plug wire for good spark. If you are unfamiliar with how to remove a spark wire while motor is running then stick with spark testers. Best not to get zapped anyways.

 

[Sprky]

Re: gas ini carb but spark plug still looks new

for coil and magneto its ok but not for CDI ....
If you go into any good Marine shop they always put the plugs onto a set of spark gaps if they want to crank the engine because they know what might happen

I own one of those shops.

In the imortal words of Jerry "I thought we were supposed to give good info here"

 

[fucawi]

Re: gas ini carb but spark plug still looks new

There are non so blind as those who will not see

 

[Jiggz]

Re: gas ini carb but spark plug still looks new

For CDI's, I would have to agree with Fucawi as it's specifically mentioned in the manual to use spark gap tester if you have to check for sparks and not to leave the plug cable disconnected. Or at least let the plug cable arc over to ground or even grounded.

 

[Sprky]

Re: gas ini carb but spark plug still looks new

There are none so blind as those who cannot see

There........fixed it for ya!

 

[fucawi]

Re: gas ini carb but spark plug still looks new

Thanks Jiggz perhaps we have saved many people some money ....

and that was another test for you yanks ...its " Non so blind as those who will not see "

 

[Sprky]

Re: gas ini carb but spark plug still looks new

Wrong again Kemosabe.

"None so blind as those who will not see" Is englishman, John Heyward paraphrasing Jeremiah 5:21

Who is so deafe, or so blynde, as is hee, That wilfully will nother hear nor see. Heyward

I always wondered where some of my customers got the ridiculous info that they would hit me with when they came into my shop..........................

I think I've hit the "mother load"

 

[fucawi]

Re: gas ini carb but spark plug still looks new

no problem Sprky ..retirement must be just around the corner for you ...so no more prats to deal with .....

 

[Sprky]

Re: gas ini carb but spark plug still looks new

I don't find them incompetent, just misinformed.

I wish I could retire. It would be nice.

I'm off to watch my kid play ball..............Have a great day!

 

[brianvolt7]

Re: gas ini carb but spark plug still looks new

Thanks Sprky and fucawi, with the knowledge and wisdom bestowed on me I can let my wife know that I can skip church tomorrow and go fishing instead!

 

[Sprky]

Re: gas ini carb but spark plug still looks new

It's all fun.............. Fuggy and I are just poking at each other.