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Author Topic: CR250. Random bog issue?????  (Read 15555 times)

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Offline Stusmoke

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CR250. Random bog issue?????
« Reply #15 on: January 05, 2013, 04:24:56 AM »
Quote from: TMKIWI on January 05, 2013, 07:06:17 AM
Does it happen at only 1 track , or does it happen everywhere.?
Reason I ask is I have had problems with some outboards having a random missfire and after countless hours of wasted time went out with them and found it only happened at 1 spot on the water.
It turned out to be electrical interference from an under water cable.
Strange but it does happen. That is why you see all the different electrical standards on CDI's.

Radio and/or electrical interference is so rare these days it can take awhile to diagnose it.
But it does happen..

If it happens at any track , disregard the above. :)

THats trippy shit. You must've been like WTFFFFFFFF!!!! A miniature and electrical bemuda triangle :D
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline SachsGS

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CR250. Random bog issue?????
« Reply #16 on: January 05, 2013, 04:35:44 PM »
Strange things happen in NZ.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline moto867

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CR250. Random bog issue?????
« Reply #17 on: January 05, 2013, 04:49:18 PM »
do you have one of those stubby colored tank vents on your bike?  if so, toss it as far away as possible, put a regular piece of vent line on there and try again.  That mikuni is crap also, put a 38mm pwk on there and you'll wonder why you didnt do it earlier.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline Stusmoke

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CR250. Random bog issue?????
« Reply #18 on: January 05, 2013, 09:25:53 PM »
Quote from: SachsGS on January 06, 2013, 12:35:44 AM
Strange things happen in NZ.

I know right. Especially when they inspect all their fat lambs, with their pulverized rectums. ONLY IN NZ!
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline redrider611

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CR250. Random bog issue?????
« Reply #19 on: January 06, 2013, 03:07:41 AM »
Ok guys, Everything is venting properly and no holes in float (as I mentioned before I have used 3 different carbs) and no change.
It does it randomly at every track no matter if it is on the first lap or 10th lap. It is completely random.

« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Soil is for farming, Dirt is for racing

"real bikes have one chain"

Offline redrider611

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CR250. Random bog issue?????
« Reply #20 on: January 06, 2013, 05:44:10 AM »
Well, the verdict is in. After splitting the cases I found a cracked right case half. it is a hairline crack but just enough to suck air at time and cause a lean issue. I have a spare set of cases so I will take care of it this weekend.
I have never seen this before but there is a first time for everything.

Thanks to everyone for the input.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Soil is for farming, Dirt is for racing

"real bikes have one chain"

Offline 2T Institute

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CR250. Random bog issue?????
« Reply #21 on: January 06, 2013, 05:51:32 AM »
Where was the crack?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline TMKIWI

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CR250. Random bog issue?????
« Reply #22 on: January 06, 2013, 08:17:15 AM »
Quote from: Stusmoke on January 06, 2013, 05:25:53 AM
I know right. Especially when they inspect all their fat lambs, with their pulverized rectums. ONLY IN NZ!

Enough of the sheep jokes stu.
They weren't funny 20 years ago and still not funny.
An intelligent man wouldn't throw out the same joke every 5 minutes. It gets old. ><img src=" title="Angry" class="smiley">
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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If you don't fall off you are not going hard enough

Offline redrider611

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CR250. Random bog issue?????
« Reply #23 on: January 06, 2013, 02:57:37 PM »
Quote from: 2T Institute on January 06, 2013, 01:51:32 PM
Where was the crack?

On the bottom (crank web area).
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Soil is for farming, Dirt is for racing

"real bikes have one chain"

Offline Stusmoke

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CR250. Random bog issue?????
« Reply #24 on: January 06, 2013, 09:51:49 PM »
Quote from: TMKIWI on January 06, 2013, 04:17:15 PM
Quote from: Stusmoke on January 06, 2013, 05:25:53 AM
I know right. Especially when they inspect all their fat lambs, with their pulverized rectums. ONLY IN NZ!

Enough of the sheep jokes stu.
They weren't funny 20 years ago and still not funny.
An intelligent man wouldn't throw out the same joke every 5 minutes. It gets old. ><img src=" title="Angry" class="smiley">

Sorry mate. I'm not taking the piss either, being serious.

Quote from: redrider611 on January 06, 2013, 10:57:37 PM
Quote from: 2T Institute on January 06, 2013, 01:51:32 PM
Where was the crack?

On the bottom (crank web area).

Thats really crap. Are you gonna buy a new case?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline SachsGS

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CR250. Random bog issue?????
« Reply #25 on: January 07, 2013, 12:17:59 AM »
That's a new one for me.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline redrider611

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CR250. Random bog issue?????
« Reply #26 on: January 07, 2013, 06:02:30 AM »
Yea, its really strange. I have spare cases so big deal.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Soil is for farming, Dirt is for racing

"real bikes have one chain"

Offline cnrcpla

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CR250. Random bog issue?????
« Reply #27 on: January 07, 2013, 12:30:13 PM »
Did a rock hit it? Maybe a casting defect from the factory?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline redrider611

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CR250. Random bog issue?????
« Reply #28 on: January 07, 2013, 05:06:17 PM »
Its a casting defect. Not going to stress over it. Ill do a case swap with fresh main bearings, seal, crank, etc. Just going to freshen it all up while it is apart
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Soil is for farming, Dirt is for racing

"real bikes have one chain"

Offline Stusmoke

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CR250. Random bog issue?????
« Reply #29 on: January 08, 2013, 03:21:59 AM »
Good call. Makes no sense to put it back together only to tear it down again in 20 hours.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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