Question about 2004 Gas Gas EC 300

1 Answer

What should the compression be on my 2004 ec 300?

It still runs good but it seems to kick over very easily. I checked it last night without warming it up and it was 100 lbs.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 29 Answers

If it is kicking over easier than before then it needs rebuilt with new piston and rings.

Posted on Feb 04, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

When Moter gets hot it won't idle then stalls when open throttle


Hello Ian. I would check the big three. Compression, spark and fuel. Once engine warms up and dies I would immediately check compression and compare it to stock spec. If that is good I would hook up an inline spark tester and run unit , while observing spark tester to see if you lose spark. Then I would check for fuel obstructions, lines, carb, etc. This should greatly narrow your problem. If you have questions, just post in this thread and I will get back to you. Good luck.

Feb 27, 2014 | 2005 Gas Gas EC 450 FSE

1 Answer

Hi, I have a 2006 gas gas ec300 and it has done 90 hours of trail riding. Should I be looking to replace piston and rings? It still starts 1st kick and seems to run perfect. Thanks go the gasser


Be sure to change the piston and rings sometime around two years from now, but only if you want to. So long as the engine doesn't seize up due to lack of oil in the gas, the piston and rings should last for years. Please rate my answer.

Sep 16, 2010 | 2008 Gas Gas EC 300

1 Answer

Hello I have a 1996 Suzuki DR-200 and recently put


G'day mate the 1st thing i would go for is float level then compresion if it does have the **** it wont take the fuel in , rules are if it has **** ( induction ) Squeeze (compression) Bang ( spark) and Blow (free exhaust) then it should go, if it was running to lean there is good chance it has a burnt exhaust valve which will greatly drop the compression/induction, also check the valve clearence. hope this helps

Apr 04, 2010 | 2000 Gas Gas EC 300

1 Answer

Gas gas ec 300 2000 is very hard to kick over, can it be made easier somehow? Thanks, Mik.


hi buddy its better if it has more compression have you serviced it and is it 4 or 2 stroke

Oct 13, 2009 | Gas Gas EC 300 Motorcycles

1 Answer

A no start when hot starts and runs good when just warm or cold no start when fully warm


There is a sequence to follow when these bikes are hot to get them started.But first.Does the bike start easily when hot if it is push started? If the answer is yes,you need to use the hot start pull switch on the carby and the get the motor in compression before you pull in the small compression lever and slowly push on the kickstarter halfway down.Release lever and fully kick the motor over from the top of the kickstarter.Don't let these bikes sit around idling.They will overheat because they need air to get through the radiator.Hope this helps

Sep 26, 2009 | 2004 Yamaha YZ 250 F

2 Answers

Yz450f that quit running


Yes, it does have an automatic decompression mechanism. It is a centrifugally operated mechanism and it is EXTREMELY unlikely that is causing your problems.
The two highest probabilities are:
1. Fouled spark plug. Forget what it looks like, put a BRAND NEW plug in. It is the cheapest form of diagnosis you can do. These bikes are terrible about fouling spark plugs and a fouled plug produces the exact symptoms you described.
2. Inspect your valve clearance. Tight valves will also make the bike hard/impossible to start with the kick starter. In some cases, it can be push started, but still won't kick. With tight valves, the bike, although hard starting, will run pretty good, for awhile. Eventually it will burn the valves and quit running though.
If your bike isn't kick starting fairly easily, something is wrong and needs to be addressed. The only other issue is making sure the idle speed is set per the service manual. These bikes have a fairly high idle, some as high as 1700 rpms. If it is set too low, it makes them hard to start too.

Sep 11, 2009 | 2004 Yamaha YZ 450 F

2 Answers

Thanks for all the tips on this CRF250R Honda but we are really getting tired of trying to kick start this guy, wearing us out HELP please. We tried cleaning the carb, checked plug for spark & last...


i dont know what all you have tried so far, but check the fuel filter, usally in the tank above petcock. the compression seems fine as you had to bump start it in third gear. you can feel the compression of a bike when pushing it in gear, like a bike with bad compression you could push in first without wheel locking

Sep 10, 2009 | 2003 Yamaha YZ 250 F

1 Answer

I have no spark..thinking coil? also does anyone know what the compression should be on a tm 300 two stroke engine? I am getting 90lbs reading. thanks


Make sure you do the compression with the throttle wide open. (And a clean air filter) You need at least 100 psi to run good. (Kick it untill the gauge needle stops climbing)

Aug 13, 2009 | 2004 TM Racing Mx 300

1 Answer

Kick start has no compression but runs fine once i get it going


Does it feel like yhe kick is even engaging and turning the crankshaft? Are you full stroking/kicking it over or short stroking it? when cold, are you using the choke. I suggest taking a compression test when it feels as if it hs no compression It could be undersized piston, rings, or a simple. good luck

Jun 12, 2009 | 2004 kawasaki KX 250 F

Not finding what you are looking for?
2004 Gas Gas EC 300 Logo

Related Topics:

100 people viewed this question

Ask a Question

Usually answered in minutes!

Top Gas Gas Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4481 Answers

Luc Francoeur
Luc Francoeur

Level 2 Expert

102 Answers

Kim Halliwell

Level 1 Expert

31 Answers

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

Answer questions

Manuals & User Guides

Loading...