TOTAL NOVICE needs advice

[madramire]

ok, so I am a technical guy, learn fast and all that.

One thing that has me stumped is cranking an engine with no ignition? How is this accomplished? I'm not a mechanic, but I would like to know how to do this myself, I just don't know enough yet - hope this question don't sound too stupid!

Ok, so, I disengage the ignition on the Johnson Seahorse 140 hp, remove all sparks, but then what? after connecting the compression tester how does one "crank" the engine.

I take it cranking means starting?? does this not require battery and ignition? Don't get me wrong, if someone was to explain this to me in a simple "non-Mechanic Terminology" manner I will be fine.

Have a mechanic friend, hoping he will help, but he's very busy lately.

Anyone willing to offer some good advice in nice easy to follow steps?

 

[tmcalavy]

Re: TOTAL NOVICE needs advice

To do a compression test, you pull and ground the plugs where you can watch for spark, insert/screw the compression gauge into the plug hole, and use the ignition system to crank the engine. No fuel in the system of course.

 

[JB]

Re: TOTAL NOVICE needs advice

You will need a battery, mate.

With the battery connected to the solenoid (+) and the engine block (-) use a small jumper to connect the battery (+) temporarily to the small terminal on the solenoid. That will operate the starter motor without turning on the ignition. Then you can measure the compression of each cylinder (5 or more turns) in turn.

If that explanation is insufficient you must get a Service Manual, which will tell you how to do it with pictures.

Hope that helps. Good luck.

 

[madramire]

Re: TOTAL NOVICE needs advice

oh, and is it normal to have sparks with oil on them? I wouldn't have thought so, but again, no mechanic

 

[madramire]

Re: TOTAL NOVICE needs advice

that makes sense, the manual says to disengage ignition, but it doesn't say where the power will come from once the power is gone.

 

[Xcusme]

Re: TOTAL NOVICE needs advice

OK, I see where this is going..it's all about terminology. Cranking or 'to crank the motor' is the act of rotating the crank shaft (and flywheel) of the motor. By pulling the rope of a rope start motor OR using the starter to accomplish the same thing, you're cranking the motor. Cranking the motor is NOT starting the motor, but you do have to crank the motor in order to start it . Unless the ignition has been disabled, cranking the motor will normally start the motor.

The motor should not be running when doing a compression test. Disabling the ignition system does 2 things. It prevents the motor from accidently starting and protects the ignition system from damage.

A recent poster said " My motor won't CRANK up".......this is confusing. Others will then ask " Are you saying the motor won't START or are you saying the motor won't turn over (rotate) because of a defective electric starter. The poster would have made things clear by saying 'My motor won't START up'. The terms Crank and Start are not interchangeable.

 

[madramire]

Re: TOTAL NOVICE needs advice

OK, I see where this is going..it's all about terminology. Cranking or 'to crank the motor' is the act of rotating the crank shaft (and flywheel) of the motor. By pulling the rope of a rope start motor OR using the starter to accomplish the same thing, you're cranking the motor. Cranking the motor is NOT starting the motor, but you do have to crank the motor in order to start it . Unless the ignition has been disabled, cranking the motor will normally start the motor.
QUOTE]


See how much easier it is when someone explains things in a manner that allows you to nderstand the functions of parts...

imagine if I told you that your router was DHCP'd and NAT'd and because your NAT was pointing to the jump box on 192 and the jumpbox was on a DMZ behind a F/W you can't get to it until the address is configured and the opposing F/W rules were configured to allow passsthru.

Would anyone understand what I meant?

THe last poster made it simple and JB cleared up that power is needed.

At least now I understand more, and can get the diff between cranking and starting, but I did know what a Start Motor is and also an alternator. but the cranking obviously turns the pistons and this must be the turns everyone refers to??

 

[ezeke]

Re: TOTAL NOVICE needs advice

You can simplify the instructions and process for your model:

Pull the emergency kill lanyard to supress fire by grounding the powerpacks;

Take out all sparkplugs so that there is no load;

Test each hole being as consistent as possible;

Record the readings for future comparison and troubleshooting.

Cylinders are numbered top to bottom.

 

[NelsonQ]

Re: TOTAL NOVICE needs advice

imagine if I told you that your router was DHCP'd and NAT'd and because your NAT was pointing to the jump box on 192 and the jumpbox was on a DMZ behind a F/W you can't get to it until the address is configured and the opposing F/W rules were configured to allow passsthru.

Would anyone understand what I meant?

Yup...but I'm still more comfortable with NATing then I am with small engine mechanics which is why I guess I lurk around these forums.

 

[Xcusme]

Re: TOTAL NOVICE needs advice

"... but the cranking obviously turns the pistons and this must be the turns everyone refers to??"

Yup, exactly...5 or so compression strokes (revolutions of the crank shaft) is usually enough to get a dependable reading...

As for the NATing, I too understand what you said...my pet peeve is router manufacturers that leave the wireless enabled , by default and wide open (no encryption), among other things. I understand it's a battle, make a product that's easy for the average Joe to hookup and run at the cost of leaving them vulnerable because folks don't read and learn how to fully configure the settings to be more safe.

 

[madramire]

Re: TOTAL NOVICE needs advice

well now, there's one for the books, most people would have looked and just said, GEEK! haha

nice to know I'm not the only techy on here.

Any yes manufacturers of routers with wide open connections are scum! but then again, enabling a simple 801 encryption with key is not that hard eh!

 

[tashasdaddy]

Re: TOTAL NOVICE needs advice

exactly what motor are you working on. year, model #, need this before the oil on plugs question can be accurately answered, as to why they have oil on them.

 

[Joe Reeves]

Re: TOTAL NOVICE needs advice

Xcusme....... Good Post! I encounter so many of those posts where Crank is used for Start and vice versa, really wastes one's time. I'd like to copy that post of yours and put it on my database to copy/paste whenever I run into that scenario in the future if you don't mind.

 

[Xcusme]

Re: TOTAL NOVICE needs advice

Joe, your answer to a guys post this last week regarding this exact issue is what prompted my reply above. By all means, use my text, God knows I've quoted your excellent carb needle adjustments too many times to count!
BTW, feel free to edit as needed to clear up the confusion.

 

[madramire]

Re: TOTAL NOVICE needs advice

exactly what motor are you working on. year, model #, need this before the oil on plugs question can be accurately answered, as to why they have oil on them.

model is a JE140TLCRD - 1984 140hp Johnson Seahorse V4 (2 Stroke) Using TC-W3 oil.

 

[i386]

Re: TOTAL NOVICE needs advice

If your compression tester is the screw-in type, it will probably have adaptors for different thread lengths. Choose the one that's the same or shorter than your spark plug threads or you'll turn your engine into a boat anchor.

Don't ask me how I know.


Now I gotta get back to work. Gotta fire up GPMC and link some GPO's to some new OU's I added in the DC this morning. Hopefully my RSOP will be what I intended.

 

[madramire]

Re: TOTAL NOVICE needs advice

If your compression tester is the screw-in type, it will probably have adaptors for different thread lengths. Choose the one that's the same or shorter than your spark plug threads or you'll turn your engine into a boat anchor.

Don't ask me how I know.


Now I gotta get back to work. Gotta fire up GPMC and link some GPO's to some new OU's I added in the DC this morning. Hopefully my RSOP will be what I intended.

taking me back to my MCSE Exams now... RSOP is a great tool go easy on them and don't harden it too much eh! You'll only have them coming back to bite your rear otherwise... unless it's YOUR DC and YOUR domain then you're free to do what you want eh!

 

[JB]

Re: TOTAL NOVICE needs advice

imagine if I told you that your router was DHCP'd and NAT'd and because your NAT was pointing to the jump box on 192 and the jumpbox was on a DMZ behind a F/W you can't get to it until the address is configured and the opposing F/W rules were configured to allow passsthru.

Sorry, we don't allow profanity or other bad language here.

 

[madramire]

Re: TOTAL NOVICE needs advice

Sorry, we don't allow profanity or other bad language here.

aye

 

[iwombat]

Re: TOTAL NOVICE needs advice

Problem is, once you enable encryption on the router it won't take the 1/2" bits anymore.