Decomp issue?
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NightBiker07
- Posts: 1942
- Joined: April 16th, 2008, 8:59 pm
- Location: USA
Decomp issue?
Is this normal? (big dirty mark on cylinder). it is coming from the decomp fitting, its all over the fitting's vent hole as well.
2000 CR250, pipe, filter, Vforce
1980 XL80s
1969 Broncco TX-6
Natural selection favors Smart people, so nature selects morons to be slow and dumb for tigers and stuff too eat. But in our modern world there just aren't enough tigers.
1980 XL80s
1969 Broncco TX-6
Natural selection favors Smart people, so nature selects morons to be slow and dumb for tigers and stuff too eat. But in our modern world there just aren't enough tigers.
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2strokeforever
- Posts: 1524
- Joined: November 13th, 2009, 1:04 pm
- Location: Vernon B.C Canada
I'm not sure - I've never used those types, but it looks like far to much, and it's 'projected' quite a distance.
It looks like it may be staying on, for too long, and being a Second Exhaust Port. It's like a 'burn' mark, to me, in this picture. Not Effing Good!
At the most, I'd expect a tiny bit of 'wetness', at the decomp. itself, and perhaps a tiny drip onto whatever is directly below. It should only be open till the engine turns over a very, very few times, and fires - well, probably before it fires. Even after a few weeks of riding, I'll just have a dust/ fuel spot that barely gets to the top of my cylinder head - which can be wiped of with my finger.
Get off the bike, and check it out whilst it's running - and if it's got 2 ports, have a Bloody Good Look too see if it's firing at the plastic tank......................
That, looks Bloody Scary
If I used one of those, I'd probably block one of the 2 ports (if there were 2), and put a fitting to take a hose, to get the wetness of what should be unburnt fuel, away from the unit. That would also help with any fears of dirt getting into the decomp. valve, that another bloke raised as a concern a couple of weeks ago. I'd go as far as putting a bit of foam in / a RC car airfilter on the hose end. And have the end up high. The Works Honda Decomps, used a 'drain hose'.
It looks like it may be staying on, for too long, and being a Second Exhaust Port. It's like a 'burn' mark, to me, in this picture. Not Effing Good!
At the most, I'd expect a tiny bit of 'wetness', at the decomp. itself, and perhaps a tiny drip onto whatever is directly below. It should only be open till the engine turns over a very, very few times, and fires - well, probably before it fires. Even after a few weeks of riding, I'll just have a dust/ fuel spot that barely gets to the top of my cylinder head - which can be wiped of with my finger.
Get off the bike, and check it out whilst it's running - and if it's got 2 ports, have a Bloody Good Look too see if it's firing at the plastic tank......................
That, looks Bloody Scary
If I used one of those, I'd probably block one of the 2 ports (if there were 2), and put a fitting to take a hose, to get the wetness of what should be unburnt fuel, away from the unit. That would also help with any fears of dirt getting into the decomp. valve, that another bloke raised as a concern a couple of weeks ago. I'd go as far as putting a bit of foam in / a RC car airfilter on the hose end. And have the end up high. The Works Honda Decomps, used a 'drain hose'.
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NightBiker07
- Posts: 1942
- Joined: April 16th, 2008, 8:59 pm
- Location: USA
The jetting seems fine. minimal smoke, no blubbering, even when idling through tight singletrack for a half hour.
I will check and see if it has two vent holes, but I am pretty sure it only has one.
It doesnt feel like it is leaking while it is closed, might be taking a while to close. The spot doesnt just wipe off like its a fuel/dust mix, it is definitely more of a burn mark.
I will check and see if it has two vent holes, but I am pretty sure it only has one.
It doesnt feel like it is leaking while it is closed, might be taking a while to close. The spot doesnt just wipe off like its a fuel/dust mix, it is definitely more of a burn mark.
2000 CR250, pipe, filter, Vforce
1980 XL80s
1969 Broncco TX-6
Natural selection favors Smart people, so nature selects morons to be slow and dumb for tigers and stuff too eat. But in our modern world there just aren't enough tigers.
1980 XL80s
1969 Broncco TX-6
Natural selection favors Smart people, so nature selects morons to be slow and dumb for tigers and stuff too eat. But in our modern world there just aren't enough tigers.
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scooter5002
- Posts: 425
- Joined: July 31st, 2010, 5:22 am
- Location: Tillsonburg On
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NightBiker07
- Posts: 1942
- Joined: April 16th, 2008, 8:59 pm
- Location: USA
LOL.....seanmx57 wrote:put the motor under water and run it. If it's bubbling get some valve lapping compound and get busy.
2000 CR250, pipe, filter, Vforce
1980 XL80s
1969 Broncco TX-6
Natural selection favors Smart people, so nature selects morons to be slow and dumb for tigers and stuff too eat. But in our modern world there just aren't enough tigers.
1980 XL80s
1969 Broncco TX-6
Natural selection favors Smart people, so nature selects morons to be slow and dumb for tigers and stuff too eat. But in our modern world there just aren't enough tigers.
-
NightBiker07
- Posts: 1942
- Joined: April 16th, 2008, 8:59 pm
- Location: USA
I like the soapy water idea better 
something about water finding its way into every bearing on this thing doesnt sound like fun. Plus, finding a puddle deep enough around here could be difficult.
something about water finding its way into every bearing on this thing doesnt sound like fun. Plus, finding a puddle deep enough around here could be difficult.2000 CR250, pipe, filter, Vforce
1980 XL80s
1969 Broncco TX-6
Natural selection favors Smart people, so nature selects morons to be slow and dumb for tigers and stuff too eat. But in our modern world there just aren't enough tigers.
1980 XL80s
1969 Broncco TX-6
Natural selection favors Smart people, so nature selects morons to be slow and dumb for tigers and stuff too eat. But in our modern world there just aren't enough tigers.
