100XP Commercial Starting Problem

[edmaude]

First of this forum is great, thanks for the prior help.

How easy is it to flood the carbs on these motors? Was at the lake yesterday and went to start boat cold with throttle up half way and choke/key depressed and no go at all. I cranked it for approx 5-10 seconds and nothing.......Repeated this process a few times until battery died

Went out to get a new battery since at the same time, realized the old battery boat came with was almost dead. Came back 25 minutes later and still not start

Guy in slip next to me suggests a shot of Ether and one quick spray and boat fires right up and ran fine all day with various stops and starts.

Do you think I loaded up the carbs that bad?

I had similar no start recently when I switched fuel tanks after running for a n hour or so. turned of motor, switched lines and boat would not restart. Took boat home and it ran on first crank on the flaps in driveway and again on the lake the next day for a few hours without issue

Fuel bulbs stay firm, plugs are new and overall the boat runs well.

Any suggestions or am I simply flooding it out? I am new to boating and we are going down to the NJ shore in a few weeks to fish in Barnegat bay. I hope to work out these starting gremlins before we leave

 

[HighTrim]

Re: 100XP Commercial Starting Problem

Not to say that after several attempts you did not flood it, but that was likely not the problem to start with. It is harder to diagnose when it is firing, but next time it does not, there is a great thread by JB in the FAQ here on iboats entitled "Outboard Wont Start". If you follow his steps, you will determine where your issues lay.

One of the most common problems is corroded/loose connections or corroded wiring. This is in relation to the battery, starter solenoid, and starter. Of course the engine ground, from the battery is a usual suspect as well. I would start by taking all of the aforementioned connections apart, filing them down to a shine, then re tightening them.

After that, you can get out your trusty DVM to voltage drop test the wiring. If you need help with this let us know.

 

[tashasdaddy]

Re: 100XP Commercial Starting Problem

what year model #?

 

[edmaude]

Re: 100XP Commercial Starting Problem

Sorry about that model is E100STLCEM.

I will clean and inspect all my connections and grounds, but overall they were fairly clean when I installled the new battery yesterday. Will clean and coat with CRC terminal spray

 

[edmaude]

Re: 100XP Commercial Starting Problem

1989 Model Year Engine as well

 

[edmaude]

Re: 100XP Commercial Starting Problem

Guys,

Would it be possible that my choke could be gummed up and not always opening and closing when I push the key in? I tested and the solenoid is getting power and working.

Would spraying plunger with carb cleaner possible help future no starts like this?

 

[HighTrim]

Re: 100XP Commercial Starting Problem

What is your cold start procedure, step by step?

 

[edmaude]

Re: 100XP Commercial Starting Problem

My procedure is:

1-attach fuel line to motor
2-pump fuel bulb until firm (I use 2 tanks, both topside with main tank running through Fuel/Walter Filter, other tank 6 gallons with separate primer and line. All lines and primer bulbs brand new, switched tanks yesterday with no difference in no start until I used a shot of ether)
3-move throttle lever out of gear and up 3/4
4-push key in to engage choke and as I turn boat starts right up on first few cranks
5-decrease throttle to about 1200 RPM's for a minute or so and then down to idle speed