bike impossible to start after dropping it

ameadows7
NWAA Supporter
NWAA Supporter
Posts: 39
Joined: 22 Jul 2014, 20:23
Bike Owned: 1991 MK2
Location: Pordenone, Italy
bike impossible to start after dropping it

Post by ameadows7 »

Aside from my 15 minute commute to work, my bike is predominantly used off-road. When I'm hill climbing, riding through snow, mud, etc, anytime I drop the bike on it's side it runs for a second and dies. At this point she's a real bitch to start. I always have to change the plug and have to bring new ones with me on every ride in case I drop it. One instance I dropped it on a snowy road. Let it sit for 10 minutes, kicked it about 200 times, still nothing. Changed the plug, kicked it a bunch more, still didn't work and eventually had to coast down with the clutch in and pop the clutch in 2nd gear to get it to fire again. This makes for some pretty frustrating riding sessions. If it helps the troubleshooting, I don't use premix and i'm using an NGK b9egv plug.

What's the issue I'm having here? Surely this isn't normal for a 2 stroke to do this.
fallenmikethebike
NWAA Supporter
NWAA Supporter
Posts: 3520
Joined: 02 Dec 2007, 16:02
Bike Owned: MK3
Location: Mid Surrey
Re: bike impossible to start after dropping it

Post by fallenmikethebike »

It's probably going to be a trial and error session.
Try turning of the fuel, but then pushing the choke lever.
Don't touch the throttle.
Where about's is the breather outlet located?
A couple of standard plugs are cheap BR8ES.
Mike
VFORCE REEDS-MUGEN HEAD AND BARREL-WHITE POWER-ALL ON MY WISH LIST!!
User avatar
pudzie83
Site Supporter
Site Supporter
Posts: 384
Joined: 29 May 2012, 13:19
Bike Owned: mk2 1992
Location: england
Re: bike impossible to start after dropping it

Post by pudzie83 »

flooded carb..........fuel off/full revs and a good kick and she'll start
VIVA LA CRM!
User avatar
knackeredMk1
Super Moderator
Super Moderator
Posts: 4185
Joined: 03 Nov 2006, 17:41
Bike Owned: Modified Mk1
Re: bike impossible to start after dropping it

Post by knackeredMk1 »

Flooded carb as above. Give the carb a good cleaning and make sure every vent is clear. 8 heat is generally better for the plug.
ameadows7
NWAA Supporter
NWAA Supporter
Posts: 39
Joined: 22 Jul 2014, 20:23
Bike Owned: 1991 MK2
Location: Pordenone, Italy
Re: bike impossible to start after dropping it

Post by ameadows7 »

Thanks guys I'll try this out next time it happens
ameadows7
NWAA Supporter
NWAA Supporter
Posts: 39
Joined: 22 Jul 2014, 20:23
Bike Owned: 1991 MK2
Location: Pordenone, Italy
Re: bike impossible to start after dropping it

Post by ameadows7 »

knackeredMk1 wrote: 8 heat is generally better for the plug.

Re-reading the info and I'm confused by this part. Can you elaborate?
User avatar
knackeredMk1
Super Moderator
Super Moderator
Posts: 4185
Joined: 03 Nov 2006, 17:41
Bike Owned: Modified Mk1
Re: bike impossible to start after dropping it

Post by knackeredMk1 »

You have plug rated 9. Usually 8 is better.
ameadows7
NWAA Supporter
NWAA Supporter
Posts: 39
Joined: 22 Jul 2014, 20:23
Bike Owned: 1991 MK2
Location: Pordenone, Italy
Re: bike impossible to start after dropping it

Post by ameadows7 »

Okay cool. Does this plug make starting easier or does it generally run better with these also?
User avatar
knackeredMk1
Super Moderator
Super Moderator
Posts: 4185
Joined: 03 Nov 2006, 17:41
Bike Owned: Modified Mk1
Re: bike impossible to start after dropping it

Post by knackeredMk1 »

8 is the Honda recommended rating. Some find that 9 is better on tuned bikes when racing.
gregorious77
NWAA Supporter
NWAA Supporter
Posts: 615
Joined: 03 Jan 2014, 20:37
Re: bike impossible to start after dropping it

Post by gregorious77 »

I thought as 9 is a hotter plug so should be better for plodding as the plug will be less likely to foul at lower engine temperatures.
User avatar
jim157
Site Supporter
Site Supporter
Posts: 131
Joined: 30 Apr 2014, 22:12
Location: Norwich
Re: bike impossible to start after dropping it

Post by jim157 »

gregorious77 wrote:I thought as 9 is a hotter plug so should be better for plodding as the plug will be less likely to foul at lower engine temperatures.
It's the reverse of that. A 9 will run cooler and be more likely to foul at lower speeds and temperatures but be better suited to running at flat out 'race' speeds.
ameadows7
NWAA Supporter
NWAA Supporter
Posts: 39
Joined: 22 Jul 2014, 20:23
Bike Owned: 1991 MK2
Location: Pordenone, Italy
Re: bike impossible to start after dropping it

Post by ameadows7 »

So 8 will be best for fucking around in trails and river beds then? I don't run it at really high RPMs too much. And is "plodding" just going slower? I'm American so I'm not familiar with the term
User avatar
jim157
Site Supporter
Site Supporter
Posts: 131
Joined: 30 Apr 2014, 22:12
Location: Norwich
Re: bike impossible to start after dropping it

Post by jim157 »

Yep, the standard 8 plug will be your best bet.
fallenmikethebike
NWAA Supporter
NWAA Supporter
Posts: 3520
Joined: 02 Dec 2007, 16:02
Bike Owned: MK3
Location: Mid Surrey
Re: bike impossible to start after dropping it

Post by fallenmikethebike »

Also, check the plug occasionally when engaging in the sort of riding you generally do. Is black and wet?
The plug is the best indicator of what's going on inside the combustion chamber.
The carb might need a different main jet.
Mike
VFORCE REEDS-MUGEN HEAD AND BARREL-WHITE POWER-ALL ON MY WISH LIST!!
ameadows7
NWAA Supporter
NWAA Supporter
Posts: 39
Joined: 22 Jul 2014, 20:23
Bike Owned: 1991 MK2
Location: Pordenone, Italy
Re: bike impossible to start after dropping it

Post by ameadows7 »

Yea the plug is always black and wet when I swap it out. Am I running too rich?

Post Reply