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BillyCRF-450X
Joined: 20 Oct 2009
Posts: 14
Location: Pine Mountain Club
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 Posted: Thu Oct 29, 2009 3:41 pm Post subject: Need some help |
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I have a 05' CRF450X, air box mods, JD kit with 160 main,,pilot jet , red needle on # 3 from the top, accelerator pump , thick O-ring,smog pump still on and operational .I'm at 5000' and ride 5'-9'.
So I installed everything with the stock pipe (Baffles out)Starts,Idles and the bike runs like a raped ape! Till today.
The wife surprised me today and bought me a new FMF pipe so I installed it and fired her up.
The bike is back firing,popping and throwing flames.
I know it's a lean condition but wanted to give you guys a shout and see what you thought.
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JD Jetting
170 main
48 pilot
Red JD needle 4th from top
Fuel Screw 3 turns out
Elevation: 3000'-9500'
Airbox opened up on sides
Power bomb with Q4 FMF Pipe |
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AgentSmith
Joined: 10 Apr 2006
Posts: 16195
Location: In the Matrix...Waiting for an Exit.
2006 Honda CRF450X
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| Posted: Thu Oct 29, 2009 4:14 pm Post subject: |
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I think you didn't replace the crush gasket between the head and the new header pipe. Air leak is causing a major lean condition.
_________________
"Make a man a fire and he'll be warm for a day.
Light a man on fire and he'll be warm for the rest of his life."
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BillyCRF-450X
Joined: 20 Oct 2009
Posts: 14
Location: Pine Mountain Club
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| Posted: Thu Oct 29, 2009 4:19 pm Post subject: |
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| AgentSmith wrote: |
| I think you didn't replace the crush gasket between the head and the new header pipe. Air leak is causing a major lean condition. |
Hmmm Your totally right about that.
The reason I didn't put it on was because it was a real tight fit,so tight I had to loosen the header up completely to to get it on.
I will give that a try and see what happens.
Ty for your reply and I will give ya a follow up to what happens ..
_________________
JD Jetting
170 main
48 pilot
Red JD needle 4th from top
Fuel Screw 3 turns out
Elevation: 3000'-9500'
Airbox opened up on sides
Power bomb with Q4 FMF Pipe |
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BillyCRF-450X
Joined: 20 Oct 2009
Posts: 14
Location: Pine Mountain Club
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| Posted: Thu Oct 29, 2009 4:41 pm Post subject: |
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| AgentSmith wrote: |
| I think you didn't replace the crush gasket between the head and the new header pipe. Air leak is causing a major lean condition. |
So your talking about the header to the head right?
_________________
JD Jetting
170 main
48 pilot
Red JD needle 4th from top
Fuel Screw 3 turns out
Elevation: 3000'-9500'
Airbox opened up on sides
Power bomb with Q4 FMF Pipe |
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BillyCRF-450X
Joined: 20 Oct 2009
Posts: 14
Location: Pine Mountain Club
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| Posted: Thu Oct 29, 2009 5:13 pm Post subject: |
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I pulled the header off to make sure that it hadn't fallen out.
So you believe that this is causing the problem because I didn't replace it with a new one?
_________________
JD Jetting
170 main
48 pilot
Red JD needle 4th from top
Fuel Screw 3 turns out
Elevation: 3000'-9500'
Airbox opened up on sides
Power bomb with Q4 FMF Pipe |
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amaviper
Joined: 26 Aug 2007
Posts: 462
Location: Indiana
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| Posted: Thu Oct 29, 2009 5:43 pm Post subject: |
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| BillyCRF-450X wrote: |
I pulled the header off to make sure that it hadn't fallen out.
So you believe that this is causing the problem because I didn't replace it with a new one? |
Exactly... Can re-use on same header pipe and it works most of the time. New header pipe - you need a new gasket.
_________________
'06 CRF450X; '07 CRF230F; '03 CRF230F; '03 XR100R; '03 XR70F; '79 KZ1300 A-1; '71 SL350 K1 |
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BillyCRF-450X
Joined: 20 Oct 2009
Posts: 14
Location: Pine Mountain Club
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| Posted: Thu Oct 29, 2009 5:58 pm Post subject: |
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| amaviper wrote: |
| BillyCRF-450X wrote: |
I pulled the header off to make sure that it hadn't fallen out.
So you believe that this is causing the problem because I didn't replace it with a new one? |
Exactly... Can re-use on same header pipe and it works most of the time. New header pipe - you need a new gasket. |
Well I think I found out what happened.
I had my son helping me during this install and when he tightened the header up he crushed the gasket on one side.
It seems to be this causing all the problems being the bike ran great before this.
Ty again for the help.
_________________
JD Jetting
170 main
48 pilot
Red JD needle 4th from top
Fuel Screw 3 turns out
Elevation: 3000'-9500'
Airbox opened up on sides
Power bomb with Q4 FMF Pipe |
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BillyCRF-450X
Joined: 20 Oct 2009
Posts: 14
Location: Pine Mountain Club
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| Posted: Sat Oct 31, 2009 2:14 pm Post subject: |
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Ok, I'm at a total loss.
I replaced the gasket with a new one and the bike is still doing the same thing.
Anyone got an idea or suggestion?
_________________
JD Jetting
170 main
48 pilot
Red JD needle 4th from top
Fuel Screw 3 turns out
Elevation: 3000'-9500'
Airbox opened up on sides
Power bomb with Q4 FMF Pipe |
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mikey526
Joined: 01 Apr 2007
Posts: 1105
Location: Wisconsin
2007 Honda CRF150R
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| Posted: Sat Oct 31, 2009 6:54 pm Post subject: |
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| BillyCRF-450X wrote: |
Ok, I'm at a total loss.
I replaced the gasket with a new one and the bike is still doing the same thing.
Anyone got an idea or suggestion? |
Don't let your wife buy bike parts for you any more...   
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BillyCRF-450X
Joined: 20 Oct 2009
Posts: 14
Location: Pine Mountain Club
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| Posted: Sun Nov 01, 2009 9:06 am Post subject: |
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| mikey526 wrote: |
Don't let your wife buy bike parts for you any more... |
Thanks for the laugh ..
I'm pulling the pilot to check that out.
_________________
JD Jetting
170 main
48 pilot
Red JD needle 4th from top
Fuel Screw 3 turns out
Elevation: 3000'-9500'
Airbox opened up on sides
Power bomb with Q4 FMF Pipe |
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BillyCRF-450X
Joined: 20 Oct 2009
Posts: 14
Location: Pine Mountain Club
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| Posted: Sun Nov 01, 2009 11:39 am Post subject: |
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So took off the header for the second time and replaced yet another exhaust gasket and pulled the pilot jet just to make sure everything was fine even though she idle's fine.
Got the same thing going on. Pops on deceleration with a small amount of flames.
I'm starting to think that it's the smog pump causing this now.
Possible right?
_________________
JD Jetting
170 main
48 pilot
Red JD needle 4th from top
Fuel Screw 3 turns out
Elevation: 3000'-9500'
Airbox opened up on sides
Power bomb with Q4 FMF Pipe |
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paul turner
Joined: 22 Sep 2005
Posts: 8531
Location: '08er
2005 Honda CRF450X
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| Posted: Mon Nov 02, 2009 7:02 pm Post subject: |
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| BillyCRF-450X wrote: |
So took off the header for the second time and replaced yet another exhaust gasket and pulled the pilot jet just to make sure everything was fine even though she idle's fine.
Got the same thing going on. Pops on deceleration with a small amount of flames.
I'm starting to think that it's the smog pump causing this now.
Possible right? |
170 main
4th clip JD Red
2.25 turns out at fuel screw.
Remove the smog crap or fill with JBWeld.
paul
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BillyCRF-450X
Joined: 20 Oct 2009
Posts: 14
Location: Pine Mountain Club
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| Posted: Mon Nov 02, 2009 7:43 pm Post subject: |
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Double 
_________________
JD Jetting
170 main
48 pilot
Red JD needle 4th from top
Fuel Screw 3 turns out
Elevation: 3000'-9500'
Airbox opened up on sides
Power bomb with Q4 FMF Pipe |
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BillyCRF-450X
Joined: 20 Oct 2009
Posts: 14
Location: Pine Mountain Club
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| Posted: Mon Nov 02, 2009 7:45 pm Post subject: |
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[/quote]
170 main
4th clip JD Red
2.25 turns out at fuel screw.
Remove the smog crap or fill with JBWeld.
paul[/quote]
The stock header studs were bent and the header had a dent in it so I just ordered a FMF Powerbomb. First thing in the morning before I pick the header up I'm pulling apart the smog pump and JB welding it. Do I put the diaphragm back in or just leave it out?
I'm at 5500' and ride from there to 9000' , I will give it a try and see what happens though.
_________________
JD Jetting
170 main
48 pilot
Red JD needle 4th from top
Fuel Screw 3 turns out
Elevation: 3000'-9500'
Airbox opened up on sides
Power bomb with Q4 FMF Pipe |
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BillyCRF-450X
Joined: 20 Oct 2009
Posts: 14
Location: Pine Mountain Club
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| Posted: Thu Nov 05, 2009 3:24 pm Post subject: Update |
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Took your advise Paul and did the things you mentioned and OMFG!!!!!!!!!! I have this : ) on me face and can't get rid of it.
So after doing the smog pump,170 main,moving to #4 on the needle I fired her up and took her for a ride. All was good besides having some de-cel popping which bringing the F/S to three turns out got rid of it.
Once again ty for the help everybody...
_________________
JD Jetting
170 main
48 pilot
Red JD needle 4th from top
Fuel Screw 3 turns out
Elevation: 3000'-9500'
Airbox opened up on sides
Power bomb with Q4 FMF Pipe |
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