Go Back   DIY Go Kart Forum > Building Plans And Advice > Go Kart Discussion

Notices

Closed Thread
 
Thread Tools Display Modes
  #21  
Old 01-16-2014, 03:18 PM
Fast Eddie's Avatar
Fast Eddie Fast Eddie is offline
Senior Member
 
Join Date: Aug 2008
Location: Out in the garage
Posts: 281
Thanks: 32
Thanked 30 Times in 18 Posts
Default

Quote:
Originally Posted by rocketkart View Post
I would reset the gap on the coil. I now some of these engine are just slapped to gether not all of them but one of the bolt's on the coil may have came lose. all you need to reset the gap is a 8mm wrench and a business card. use the business card between the coil and flywheel to set the gap.
Agreed...enough spark to poke ya but no visible arc=too much gap @ coil. Talkes two seconds to take off the shroud. Save the gas $$ to HF.
__________________
Proud member of the Emmett Outlaws
  #22  
Old 01-16-2014, 04:01 PM
rocketkart's Avatar
rocketkart rocketkart is offline
Senior Member
 
Join Date: Oct 2013
Location: florida
Posts: 1,138
Thanks: 228
Thanked 167 Times in 146 Posts
Default

it's not a 112 predator engine but it's the same thing to set the gap.
__________________
Imagination is more important than knowledge.
Albert Einstein
  #23  
Old 01-16-2014, 04:31 PM
Doc Sprocket's Avatar
Doc Sprocket Doc Sprocket is offline
*********
 
Join Date: Jun 2009
Location: Ontario, Canada
Posts: 15,677
Thanks: 723
Thanked 2,204 Times in 1,693 Posts
Default

Quote:
Originally Posted by rocketkart View Post
I would reset the gap on the coil. I now some of these engine are just slapped to gether not all of them but one of the bolt's on the coil may have came lose. all you need to reset the gap is a 8mm wrench and a business card. use the business card between the coil and flywheel to set the gap.
The problem with this, is likelihood. Let's think about this: Inititally, the engine ran. Now, it doesn't. It is suggested the armature air gap is too great... How is this possible? The very moment the mounting screws are loosened, the magnet draws the coil right smack into that magnet, it does not repel it outwards. And believe you me- if the coil was banging off the flywheel, you'd know about it. You can go ahead and check it, but I honestly would be incredibly surprised if that was the issue.
__________________
Treat it as you would an aircraft frame and you should have no problems. -Name Withheld
The Manual- "Just the manufacturer's opinion of how to put this together."- Tim "The Tool Man" Taylor
Put down the wrench, and come out with your hands up!- Me!
Wrench, Wheel, Wreck, Repeat...
The Following User Says Thank You to Doc Sprocket For This Useful Post:
rocketkart (01-16-2014)
  #24  
Old 01-16-2014, 04:40 PM
rocketkart's Avatar
rocketkart rocketkart is offline
Senior Member
 
Join Date: Oct 2013
Location: florida
Posts: 1,138
Thanks: 228
Thanked 167 Times in 146 Posts
Default

Quote:
Originally Posted by Doc Sprocket View Post
The problem with this, is likelihood. Let's think about this: Inititally, the engine ran. Now, it soesn't. It is suggested the armature air gap is too great... How is this possible? The very moment the mounting screws are loosened, the magnet draws the coild right smack into that magnet, it does not repel it outwards. And believe you me- if the coil was banging off the flywheel, you'd know about it. You can go ahead and check it, but I honestly would be incredibly surprised if that was the issue.
at this point I think where all just guessing.lol im not there to see whats going on and what not so.....
__________________
Imagination is more important than knowledge.
Albert Einstein
  #25  
Old 01-16-2014, 04:44 PM
Doc Sprocket's Avatar
Doc Sprocket Doc Sprocket is offline
*********
 
Join Date: Jun 2009
Location: Ontario, Canada
Posts: 15,677
Thanks: 723
Thanked 2,204 Times in 1,693 Posts
Default

I dunno.

While the drive may be inconvenient, I'd be returning it. I am a firm believer in the warranty system. The OP bought and paid for a perfect new engine, and he darn well deserves one. Curiosity may be one thing, but he should not have to troubleshoot and repair a new purchase.
__________________
Treat it as you would an aircraft frame and you should have no problems. -Name Withheld
The Manual- "Just the manufacturer's opinion of how to put this together."- Tim "The Tool Man" Taylor
Put down the wrench, and come out with your hands up!- Me!
Wrench, Wheel, Wreck, Repeat...
The Following 2 Users Say Thank You to Doc Sprocket For This Useful Post:
firemanjim (01-16-2014), machinist@large (01-16-2014)
  #26  
Old 01-16-2014, 04:52 PM
OzFab's Avatar
OzFab OzFab is offline
Senior Member
 
Join Date: Nov 2011
Location: Warwick Qld, Australia
Posts: 15,619
Thanks: 1,135
Thanked 3,399 Times in 2,676 Posts
Default

__________________
2013 Build-off Winner - http://www.diygokarts.com/vb/showthread.php?t=21076
  #27  
Old 01-16-2014, 05:16 PM
rocketkart's Avatar
rocketkart rocketkart is offline
Senior Member
 
Join Date: Oct 2013
Location: florida
Posts: 1,138
Thanks: 228
Thanked 167 Times in 146 Posts
Default

Quote:
Originally Posted by Doc Sprocket View Post
I dunno.

While the drive may be inconvenient, I'd be returning it. I am a firm believer in the warranty system. The OP bought and paid for a perfect new engine, and he darn well deserves one. Curiosity may be one thing, but he should not have to troubleshoot and repair a new purchase.
__________________
Imagination is more important than knowledge.
Albert Einstein
  #28  
Old 01-16-2014, 05:17 PM
machinist@large's Avatar
machinist@large machinist@large is offline
Senior Member
 
Join Date: Jul 2011
Location: West Michigan, 49331
Posts: 2,838
Thanks: 3,133
Thanked 521 Times in 413 Posts
Default

Quote:
Originally Posted by Doc Sprocket View Post
I dunno.

While the drive may be inconvenient, I'd be returning it. I am a firm believer in the warranty system. The OP bought and paid for a perfect new engine, and he darn well deserves one. Curiosity may be one thing, but he should not have to troubleshoot and repair a new purchase.


Some things from HF I'm willing to gamble on as an experiment (chainsaw chain sharpener; on sale, $20.00). Machine tools and engines don't fall in that category. Don't tear it apart, just take it back. I bought an 8" bench grinder just before Christmas. Got it home, plugged it in, turned it on. Had to hold it down until it stopped because the 6" C-clamps looked like they weren't going to hold it.

Pulled both wheels, tried it again. Ditto. Remounted the wheels, boxed it up, took it back and exchanged it; the only question was what I thought was wrong. They even let me unbox and test the replacement before I took it with me. (The stock wheels are junk, but they'll do 'till I get replacements.)

Moral of the story; if it doesn't work, take it back. They will give you a new one if you haven't with it (at least not obviously). The more you tear into it, the more likely they WON'T warranty it.
  #29  
Old 01-16-2014, 09:26 PM
mucduc mucduc is offline
Junior Member
 
Join Date: Dec 2013
Location: Southeast Georiga
Posts: 25
Thanks: 0
Thanked 3 Times in 1 Post
Default

Well I checked the compression....kinda. Either my compression gauge has a leak or the motor has no compression. Both are a likely problem since my gauges hose isn't in the best shape. I will swing by the store on my way to my part time job so I can test it there. I didn't bother with a wet test.

But even with no compression I don't think that would have any effect on the spark.

I am going to take it back either way. But it is a curious thing. I'm not going to dig to deep into it. I have gotten a handful of old crap motors bag up and running but this has stumped me

Sent from my Nexus 7 using Tapatalk
  #30  
Old 01-16-2014, 09:46 PM
rocketkart's Avatar
rocketkart rocketkart is offline
Senior Member
 
Join Date: Oct 2013
Location: florida
Posts: 1,138
Thanks: 228
Thanked 167 Times in 146 Posts
Default

juses crust, just put your finger over the spark plug hole and pull it over and if it blow's your finger off the spark plug hole thin it's all good, if it don't take that soab back.
__________________
Imagination is more important than knowledge.
Albert Einstein
  #31  
Old 01-16-2014, 10:32 PM
mucduc mucduc is offline
Junior Member
 
Join Date: Dec 2013
Location: Southeast Georiga
Posts: 25
Thanks: 0
Thanked 3 Times in 1 Post
Default

ha yeah that would tell me if there is atleast something there.

Edit: yes there feels like sufficient pressure when i plug the hole with my finger

Last edited by mucduc; 01-16-2014 at 10:36 PM. Reason: yes there feels like sufficient pressure when i plug the hole with my finger
  #32  
Old 01-16-2014, 11:30 PM
firemanjim's Avatar
firemanjim firemanjim is offline
Just kartin' around....
 
Join Date: Jul 2013
Location: Houston Texas
Posts: 5,191
Thanks: 1,056
Thanked 1,385 Times in 1,097 Posts
Default

Try this for me please..... Get some starting fluid and give a quick spray into the carb. Both with choke on and off,try starting it . The ether has a lower flashpoint, meaning it will ignite faster/easier. If you dont have any starting fluid, a quick home fluid can be found in your first aid kit/medicine cabinet. Use a cap full of rubbing alcohol,the higher the %age the better. (70%80%90%) It works great in a pinch and can be used to clean gunk from carbs,engine blocks/parts.....
Anyway, just want to see if you get enough spark to at least "cough" with the starting fluid. Your predicament has me baffled as well. Maybe you have a short or are grounding out just a little. Enough to drop the spark voltage..... ?
__________________
(@@)@@(@@)@@-@@@@@@ (@@)@@-@@@@@@-@@@
  #33  
Old 01-17-2014, 12:23 AM
mucduc mucduc is offline
Junior Member
 
Join Date: Dec 2013
Location: Southeast Georiga
Posts: 25
Thanks: 0
Thanked 3 Times in 1 Post
Default

i will try that. i got ether in my truck so i will try that in the morning. im at work right now, and would go try it out, but its 30 degrees outside and cold. the first thing i thought was that it was grounding out somewhere. cant trace the plug wire with out taking the shroud and tank off. hopefully im not busy tomorrow and will be able to mess with it.

and i guess i could test the resistance of the plug wire and see what kind of numbers im getting. maybe when i flooded it and went to pull the spark plug to dry it out, i may have tweaked the wire at the boot. i wouldnt think so thou since it has a little handle to pull on and i have pulled my fair share of spark plugs, but if the wire is cheap and did not have a good crimp i my have messed it up a little now adding more resistance.
  #34  
Old 01-17-2014, 07:02 AM
zbuck zbuck is offline
Senior Member
 
Join Date: Jul 2010
Location: Ft. Wayne, IN
Posts: 782
Thanks: 69
Thanked 170 Times in 143 Posts
Default

There seems to be a problem taking it back to HF? I would not jack with that engine for 1 sec., it would go right back to HF.
  #35  
Old 01-17-2014, 07:13 AM
mucduc mucduc is offline
Junior Member
 
Join Date: Dec 2013
Location: Southeast Georiga
Posts: 25
Thanks: 0
Thanked 3 Times in 1 Post
Default

No real problem taking it back. But I'm on the back half of a 48 hour shift and don't get off work til 8am Saturday so I have time to fool with the motor. I'm taking it back tomorrow. Its just a "want to know” type thing now

Sent from my Nexus 7 using Tapatalk
  #36  
Old 01-17-2014, 07:13 PM
mucduc mucduc is offline
Junior Member
 
Join Date: Dec 2013
Location: Southeast Georiga
Posts: 25
Thanks: 0
Thanked 3 Times in 1 Post
Default

Tried the ether with no prevail. I didn't have my multimeter in my truck like I thought. So I guess it will remain a mystery. I'm done messing with it. Its going back in the morning. Probably should have called HF today to see if they had any in stock. Thanks everyone for the help

Sent from my Nexus 7 using Tapatalk
The Following 3 Users Say Thank You to mucduc For This Useful Post:
firemanjim (01-17-2014), machinist@large (01-17-2014), rocketkart (01-17-2014)
  #37  
Old 01-17-2014, 07:19 PM
machinist@large's Avatar
machinist@large machinist@large is offline
Senior Member
 
Join Date: Jul 2011
Location: West Michigan, 49331
Posts: 2,838
Thanks: 3,133
Thanked 521 Times in 413 Posts
Default

Quote:
Originally Posted by mucduc View Post
Tried the ether with no prevail. I didn't have my multimeter in my truck like I thought. So I guess it will remain a mystery. I'm done messing with it. Its going back in the morning. Probably should have called HF today to see if they had any in stock. Thanks everyone for the help

Sent from my Nexus 7 using Tapatalk
Good luck; maybe take some motor oil and gas so you can try out the replacement in the parking lot? Might impress to them that you're actually serious....



Pat
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 09:26 PM.