For all you 850 XP guys
Nov 29, 2008 | 12:17 PM
#11
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For all you 850 XP guys
Actually I should have said a fouled plug will wreak havoc on the ignition system,instead of sometimes.
Robert,any idea what the bikes that are seeing this are doing? I know you aren't a mechanic but have you heard what the complaint has been or saw one of the machies acting up. I hear that dealers are having the most trouble,due to people starting them to hear the new engine and then shutting them down.,like you were saying.
Reason I ask is we have had some reports of mahines backfiring,at least one guy has a big problem with it. He has adjusted the throttle cable with no positive result. Just wondering if this might be his problem. IIRC it started right after he got it,maybe the plugs got fouled at the dealer before he picked it up.
Robert,any idea what the bikes that are seeing this are doing? I know you aren't a mechanic but have you heard what the complaint has been or saw one of the machies acting up. I hear that dealers are having the most trouble,due to people starting them to hear the new engine and then shutting them down.,like you were saying.
Reason I ask is we have had some reports of mahines backfiring,at least one guy has a big problem with it. He has adjusted the throttle cable with no positive result. Just wondering if this might be his problem. IIRC it started right after he got it,maybe the plugs got fouled at the dealer before he picked it up.
Nov 29, 2008 | 01:23 PM
#13
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For all you 850 XP guys
Wow, my local dealer demos it just like that! Start it, hear the sound with a few pumps of the throttle, then shut it right down.
Maybe I should tell them about this "run rich program."
Maybe I should tell them about this "run rich program."
Nov 29, 2008 | 01:33 PM
#14
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For all you 850 XP guys
<div class="FTQUOTE"><begin quote>Originally posted by: mtpockets
Wow, my local dealer demos it just like that! Start it, hear the sound with a few pumps of the throttle, then shut it right down.
Maybe I should tell them about this "run rich program."</end quote></div>
That is a sure way to cause a problem,not just on the 850. Pumping the throttle with no load on the engine and then immediately shutting down can cause it to load up on fuel,not a good idea on any EFI machine IMO.
Most EFI's have a cold enrichment program,kind of the electronic version of a choke. Some,like the 850,maybe richer that others. But most modern EFI has this programmed in. Gives a little extra fuel until it is warmed up. EFI engines still need to be "choked" when cold,they just do it differently. With cold fuel and cold air coming in requires more fuel as cold air is more dense and the cold fuel doesn't atomize as easily. A warm engine burns the fuel more effieicently,therfore can get by with a leaner mixture. Also the warmer engine warms the fuel a little helping it to atomomize better.
Wow, my local dealer demos it just like that! Start it, hear the sound with a few pumps of the throttle, then shut it right down.
Maybe I should tell them about this "run rich program."</end quote></div>
That is a sure way to cause a problem,not just on the 850. Pumping the throttle with no load on the engine and then immediately shutting down can cause it to load up on fuel,not a good idea on any EFI machine IMO.
Most EFI's have a cold enrichment program,kind of the electronic version of a choke. Some,like the 850,maybe richer that others. But most modern EFI has this programmed in. Gives a little extra fuel until it is warmed up. EFI engines still need to be "choked" when cold,they just do it differently. With cold fuel and cold air coming in requires more fuel as cold air is more dense and the cold fuel doesn't atomize as easily. A warm engine burns the fuel more effieicently,therfore can get by with a leaner mixture. Also the warmer engine warms the fuel a little helping it to atomomize better.
Nov 29, 2008 | 01:45 PM
#15
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For all you 850 XP guys
<div class="FTQUOTE"><begin quote>Originally posted by: mtpockets
Wow, my local dealer demos it just like that! Start it, hear the sound with a few pumps of the throttle, then shut it right down.
Maybe I should tell them about this "run rich program."</end quote></div>
I would let them know. We just found out about it. Polaris didn't put out the word very well and we found out the hard way. After a few fouled plugs from customers we finally got an answer. Don't have a memo or bulletin #.
Wow, my local dealer demos it just like that! Start it, hear the sound with a few pumps of the throttle, then shut it right down.
Maybe I should tell them about this "run rich program."</end quote></div>
I would let them know. We just found out about it. Polaris didn't put out the word very well and we found out the hard way. After a few fouled plugs from customers we finally got an answer. Don't have a memo or bulletin #.
Nov 29, 2008 | 02:09 PM
#16
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For all you 850 XP guys
Maybe E3 has a cross reference for the XP plugs http://e3sparkplugs.com/index.htm
Nov 29, 2008 | 02:27 PM
#17
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For all you 850 XP guys
Nope...no cross.
I can't even find a good listing for it in the Champion catalog. Trying to decipher the part number is a challenge as well. I know it uses a 9/16( or possibly 14mm) hex and Champion's break down doesn't even list a shell code with a hex that small.
So far all I know is it is heat range 6 and 9/16 hex. I meant to measure the reach when I had them out and I forgot. I can tell you that we shouldn't have a problem chunking plugs as the threads in the head appear to be deep(ie the the threaded portion of the plug is over 1" and maybe a 1/4-3/8 protrudes into the cyclinder. The above measurements are just from memory of me eyeballing the plug a cople weeks ago.
I can't even find a good listing for it in the Champion catalog. Trying to decipher the part number is a challenge as well. I know it uses a 9/16( or possibly 14mm) hex and Champion's break down doesn't even list a shell code with a hex that small.
So far all I know is it is heat range 6 and 9/16 hex. I meant to measure the reach when I had them out and I forgot. I can tell you that we shouldn't have a problem chunking plugs as the threads in the head appear to be deep(ie the the threaded portion of the plug is over 1" and maybe a 1/4-3/8 protrudes into the cyclinder. The above measurements are just from memory of me eyeballing the plug a cople weeks ago.
Nov 29, 2008 | 03:12 PM
#18
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For all you 850 XP guys
Great info HIGHOCTANE! You sound like my dad. He's been a "wrench" all his life. Even though he is 79, he can go on... and on... and on for hours about this stuff. LOL
Sometimes he goes on for too long! LOL LOL
Sometimes he goes on for too long! LOL LOL
Nov 29, 2008 | 03:16 PM
#19
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For all you 850 XP guys
<div class="FTQUOTE"><begin quote>Originally posted by: DCT
Great info HIGHOCTANE! You sound like my dad. He's been a "wrench" all his life. Even though he is 79, he can go on... and on... and on for hours about this stuff. LOL
Sometimes he goes on for too long! LOL LOL</end quote></div>
Yeah I know I go on for too long,but at least if I am typing it no one actually has to listen to me go on and on,lol
At 79 I bet he has alot more to talk about than I do.
It's cold and rainy out so I am bored. Which usually means I'll spend too much time on here and/or go out to the garage and start tinkering with something. If I get really bored I'll throw on my Gortex and go ride.
Great info HIGHOCTANE! You sound like my dad. He's been a "wrench" all his life. Even though he is 79, he can go on... and on... and on for hours about this stuff. LOL
Sometimes he goes on for too long! LOL LOL</end quote></div>
Yeah I know I go on for too long,but at least if I am typing it no one actually has to listen to me go on and on,lol
At 79 I bet he has alot more to talk about than I do.
It's cold and rainy out so I am bored. Which usually means I'll spend too much time on here and/or go out to the garage and start tinkering with something. If I get really bored I'll throw on my Gortex and go ride.
Nov 29, 2008 | 03:31 PM
#20
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For all you 850 XP guys
<div class="FTQUOTE"><begin quote>Originally posted by: HIGHOCTANE
Yeah I know I go on for too long,but at least if I am typing it no one actually has to listen to me go on and on,lol
At 79 I bet he has alot more to talk about than I do.
It's cold and rainy out so I am bored. Which usually means I'll spend too much time on here and/or go out to the garage and start tinkering with something. If I get really bored I'll throw on my Gortex and go ride.</end quote></div>
Nah... you didn't go on for too long... just long enough to explain it thoroughly. Dad goes on for hours and hours... LOL LOL
Yeah I know I go on for too long,but at least if I am typing it no one actually has to listen to me go on and on,lol
At 79 I bet he has alot more to talk about than I do.
It's cold and rainy out so I am bored. Which usually means I'll spend too much time on here and/or go out to the garage and start tinkering with something. If I get really bored I'll throw on my Gortex and go ride.</end quote></div>
Nah... you didn't go on for too long... just long enough to explain it thoroughly. Dad goes on for hours and hours... LOL LOL