Freestyle MTX

Ramp_Tramp · June 27th, 2012, 10:26 AM

My CRF is sooo hard to start especially when hot ive looked around on the net about fuel filters and remapping but wandered if anyone on here has had this problem and fixed it?
It has always been hard to start and I have also recently rebuilt the engine so the mechanical parts are all good.

turbo38t · June 27th, 2012, 02:47 PM

Adjust your valves......problem solved...

Quote:

Originally Posted by Ramp_Tramp

My CRF is sooo hard to start especially when hot ive looked around on the net about fuel filters and remapping but wandered if anyone on here has had this problem and fixed it?
It has always been hard to start and I have also recently rebuilt the engine so the mechanical parts are all good.

733xm · June 27th, 2012, 03:22 PM

What he said...

hammer · June 28th, 2012, 05:25 AM

buy electric start or 2-smoker

Chef · June 28th, 2012, 06:07 AM

Sounds like the valves need adj!

sharkmx82 · June 28th, 2012, 07:44 AM

Some of the 09s had a parts recall, might want to check and see if your VIN matches. Other then that, valves.

Ramp_Tramp · July 1st, 2012, 10:06 AM

Yes, I have just rebuild the engine and the shimming is spot on. I will check for recalls! fueling issue i think....

spode734 · July 1st, 2012, 11:56 AM

The 09s have a lot of problems with the fuel pump. My buddy had one that the furl pump wouldnt stay primed. I'm guessing an o ring was bad or something and the fuel would leak back down. Jus changed the fuel pump problem solved.

PiNN-iT · July 2nd, 2012, 05:33 PM

Put 12 volts to the fuel pump and then kick it. If it starts right up, then ur pump is leaking down. If you have a friend with a fuel inj Honda, just swap the tanks and try that...I had the same issue on my 09, it was the fuel pump leaking back.

rippedbx · July 3rd, 2012, 04:28 PM

Heard you can put the O' ten fuel pump on the O' nine. supposedly the problem was fixed the next year

Ramp_Tramp · July 4th, 2012, 05:16 AM

Quote:

Originally Posted by PiNN-iT

Put 12 volts to the fuel pump and then kick it. If it starts right up, then ur pump is leaking down. If you have a friend with a fuel inj Honda, just swap the tanks and try that...I had the same issue on my 09, it was the fuel pump leaking back.

WIN... ill give it a try.

SHAUNUS · July 4th, 2012, 06:04 PM

I've had crf's most of my riding life. Learnt a few things about these bikes along the way. Basically the minute you need to start shimming valves to gain proper spec they are on their way out, you will be forever repeating the process. Replace them with some decent ones. I go <50hrs on a top end depending on how hard I have been riding it. With freeriding and ramping the load put on these bikes is fairly minimal compared to racing so I'm not as concerned.

Be preventitive. Fix a top end or wait and fix top and bottom end.

June 27th, 2012, 10:26 AM	#1
Ramp_Tramp Registered User Join Date: Oct 2008 Location: London, England Posts: 441	09 CRF 450 Hard to start My CRF is sooo hard to start especially when hot ive looked around on the net about fuel filters and remapping but wandered if anyone on here has had this problem and fixed it? It has always been hard to start and I have also recently rebuilt the engine so the mechanical parts are all good.

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June 27th, 2012, 03:22 PM	#3
733xm Registered User Join Date: Mar 2009 Location: squan nj Posts: 25	What he said...

June 28th, 2012, 05:25 AM	#4
hammer Registered User Join Date: Oct 2005 Location: Dayton, OH Posts: 1,385	buy electric start or 2-smoker

June 28th, 2012, 06:07 AM	#5
Chef Registered User Join Date: Jun 2005 Location: Piedmont,OK Posts: 294	Sounds like the valves need adj!

June 28th, 2012, 07:44 AM	#6
sharkmx82 Registered User Join Date: May 2003 Location: plano, TX, USA Posts: 2,636	Some of the 09s had a parts recall, might want to check and see if your VIN matches. Other then that, valves.

July 1st, 2012, 10:06 AM	#7
Ramp_Tramp Registered User Join Date: Oct 2008 Location: London, England Posts: 441	Yes, I have just rebuild the engine and the shimming is spot on. I will check for recalls! fueling issue i think....

July 1st, 2012, 11:56 AM	#8
spode734 Registered User Join Date: Nov 2009 Location: Memphis, Tn Posts: 48	The 09s have a lot of problems with the fuel pump. My buddy had one that the furl pump wouldnt stay primed. I'm guessing an o ring was bad or something and the fuel would leak back down. Jus changed the fuel pump problem solved.

July 2nd, 2012, 05:33 PM	#9
PiNN-iT Registered User Join Date: Oct 2008 Location: Dodd City, TX Posts: 190	Put 12 volts to the fuel pump and then kick it. If it starts right up, then ur pump is leaking down. If you have a friend with a fuel inj Honda, just swap the tanks and try that...I had the same issue on my 09, it was the fuel pump leaking back.

July 3rd, 2012, 04:28 PM	#10
rippedbx Registered User Join Date: May 2009 Location: Salem, UT Posts: 1,627	Heard you can put the O' ten fuel pump on the O' nine. supposedly the problem was fixed the next year

July 4th, 2012, 06:04 PM	#12
SHAUNUS Registered User Join Date: May 2004 Location: Australia Posts: 383	I've had crf's most of my riding life. Learnt a few things about these bikes along the way. Basically the minute you need to start shimming valves to gain proper spec they are on their way out, you will be forever repeating the process. Replace them with some decent ones. I go <50hrs on a top end depending on how hard I have been riding it. With freeriding and ramping the load put on these bikes is fairly minimal compared to racing so I'm not as concerned. Be preventitive. Fix a top end or wait and fix top and bottom end.

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