Question about 2003 KTM SX 450 racing

Open Question

Ktm sx 450 overheating

Engine heats up fast,boils coolant at idle, and after short ride

Posted by Anonymous on

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
pakis
  • 86 Answers

SOURCE: 2005 ktm 450 sx die while riding.

yes, you are correct, those are the two pieces that could solve your problem, but i would go first for your cdi, you may choose to have it tested first also, before you jump out to buy a new one.

Posted on Nov 24, 2008

Ad
  • 17 Answers

SOURCE: can you put electric start on a 2006 ktm 450 sx

Yes, it IS possible to put electric start on a 2006 KTM 450 SX, but, it's about $800 to get it and get it all set up...

Posted on Aug 20, 2009

ollie reece
  • 1167 Answers

SOURCE: where is the drain plug on a ktm 450 sx-f

hi buddy the one with the bolts is the drain plug

Posted on Oct 24, 2009

dmsr63
  • 2050 Answers

SOURCE: how assembly water pump ktm 450

If this helps...
there is a good exploded view on...
www.bikebandit.com

Posted on Dec 22, 2009

Porrelli
  • 167 Answers

SOURCE: ktm 450 sx wont start when hot.

Had this very same problem with a KX 85 last week! Turned out funnily enough to be the spark plug. So try this first mate. If that dosn't fix it then you have the age old mechanics question "did I do somthing wrong or is it just a coincidence". Start back at your beginning next & re-check your valves.Most of these late model bikes(12000-16000rpm screamers) have titanium COATED valves. Once the coating wears off they close up valves REALLY QUICKLY!!!!! If the clearances are ok your work was good & at least it will rule out insuficient valve clearance as the cause to your problem.If it still plays up - well then I would use the process of elimination to solve the problem i.e is it electrical,fuel, or mechanical. With valves checked already a compression or leakage test would pritty well rule out the mechanical system.To test electrics on motorcycles without test equiptment & a lotof know how can be difficult & EXTREMELY DANGEROUS( shock hazard 40,000 v+). So I'll try keep it simple. On the web you can purchase ignition spark testers that will connect to any plug lead & cause the ignition system to jump a gap of 6 to 8mm.These are cheap & will test the system as a whole for its performance. Great for a quick check of any ignition system. If the spark seems fine then your left with the fuel system. check for blocked fuel tap,water in tank or carby bowl,blocked fuel filler cap vent,blocked carby vent hoses,accellerator pump function.
I hope this has been somewhat helpfull.
I am happy to help with further questions
Regards Andrew

Posted on Jul 15, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

2006 KTM 65 SX idles too high


Hi, Samantha and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector.
10. Multiple carburetors not in sync.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
2006 KTM 65SX issue
KTM idle issues
How to Tune Adjust KTM 2 Stroke Carburetors
KTM 65 SX 2009 Repair Manual
http://www.partsfish.com/page/oem-parts-for-ktm
KTM 65 SX 2006 Owner Manual

Aug 14, 2017 | 2006 KTM 65 SX

1 Answer

Hiya just a quick question on what coolant to put in my ktm 250 sxf Cheers????


Hi, Mally sorry you can't find the first and best tool you ever bought for your KTM despair not for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Coolant
Flushing the coolant 250 350 450 505 SX XC 4 Strokes
KTM Service Repair Manuals Kristofsx com
KTM 250 SX Owner Manual

May 01, 2016 | KTM Motorcycles

1 Answer

Ktm sx350f 2011 whys it overheating ,when on stand running for five minutes?


Because it needs air going through the radiators .It is a race bike and it is not suppose to sit around and idle in one spot .It does not come stock with a fan.If you are riding in a lot of slow speed areas on hot days you may want to add an eletcric fan kit available at your local ktm dealer.Also evans coolant runs cooler the oem anti freeze.

Jun 07, 2014 | 2011 KTM SX 350 F

2 Answers

Ktm 450 sxf 2008 that over heats quickly


Check for any gaps around the head and block possible blown head gasket or hate to say cracked head

Apr 28, 2014 | 2008 KTM 450 SX-F

2 Answers

Cooling system


The KTM sx is a full race bike - the radiators do not have fans to keep the bike cool when not moving - the bike must be moving to keep the air passing through the radiators to keep the engine cool - if you have the bike standing still there is no air moving through the radiator - hence why it over heats - tip start the bike after you are fully kitted up for your ride - let it warm up for around a min tops then ride - if you have to stop for a period of time when riding turn the bike off - I have the same issues of over heating if not moving on my VOR 530 - I do as described above and have no issues at all with over heating when riding. good luck

Apr 12, 2014 | 2002 KTM SX 400 Racing

1 Answer

Engine sounds like crickets


Hi Hm1shaw, I just loaned my brand new pair of listening ears to your local dealers chief technician so he could take your bike for a test ride and give you his professional opinion and estimate about your noise and repair cost. Good luck and have a nice day.
manuals

Apr 08, 2013 | 2008 KTM 250 SX-F

1 Answer

Can you put electric start on a 2006 ktm 450 sx


Yes, it IS possible to put electric start on a 2006 KTM 450 SX, but, it's about $800 to get it and get it all set up...

Aug 20, 2009 | 2006 KTM 450 SX

2 Answers

I just bought a 2009 ktm 450exc new from dealer ran bike 8th of throttle bike has no power runs poor. sent bike back twicethen they gave me a new bike perfect runs great now. it overheats at lights i see...


Take the bike back to the dealer. The problem with KTM bikes is that they are so highly engineered that most riders, ( and most dealers ), have a problem getting them tuned properly. Since the bike is new, the carb should not be the problem. Don't mess with it. Have the dealer check the radiator for proper coolent level and coolent flow. If the bike has a fan, check the sensor and fan operation.

Can I get a “very helpful” rating on this answer?

Aug 09, 2009 | 2008 KTM 450 EXC-R

1 Answer

2005 ktm 450 sx die while riding.


yes, you are correct, those are the two pieces that could solve your problem, but i would go first for your cdi, you may choose to have it tested first also, before you jump out to buy a new one.

Nov 24, 2008 | 2005 KTM SX 450 racing

2 Answers

Over heating


then i stripped the hex bolt for oil screen.for overheating issue i was told to rejet to 185 @ 45 and change out pipe for restriction! after doing this the bike was still getting hot.so then i changed stockk coolant to cycle logics engine ice and gutted the thermostat for a free flowing system!after doing all this the bike needs a lot more abuse than before to over heat but it STILL DOES-very frustrating!! my only option left is to install the engine fan which is still on back order for at least another monthand was also recomended to run waterless coolan(evans)!im 260 pounds which doesnt help the situationi know. but if anyone else has any suggestions im all ears!dont get me wrong i love the bikeit HAS cooled down a lot! but im looking for news maybee to incress the lb rating on radiator cap to possibly 4lbs from the three lbs ktm supplies for this bike! if anybody has heard news with this problem please respond! thank you,ve got a 2006 450 exc that used to over heat also. I installed a JD Jetting kit aand it seems much better. Also installed a coolant recovery system for those real hot days. No problems since.,,,

Nov 10, 2008 | 2003 KTM SX 525 Racing

Not finding what you are looking for?
2003 KTM SX 450 racing Logo

Related Topics:

54 people viewed this question

Ask a Question

Usually answered in minutes!

Top KTM Experts

yadayada
yadayada

Level 3 Expert

77194 Answers

bazzz7071
bazzz7071

Level 2 Expert

342 Answers

Arnie Burke
Arnie Burke

Level 3 Expert

4536 Answers

Are you a KTM Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...