*Honda 400ex Trouble*

[ckb2008]

hello i recently purchased a 2001 honda 400ex
the day after i got it i was riding it hard for about 30 minutes.

in 5th gear topping out i heard a decently loud "POP" noise from the engine bay area.

I replaced the spark plug and ended up taking off the head trying to search for the problem.

The engine has no problem turning over, the Carb looked good and had no problem with gas flow it seemed.

All sounds normal it just seems as if maybe a line is clogged???

When i looked into the Engine head one of the pistons had standing oil around it where the others didnt. maybe that will help???

Here are some
PICS (http://img14.imageshack.us/gal.php?g=img00016n.jpg)
HELP!!!

[aDviSol2y]

So does it run?

[BEAVER.989]

One of the pistons? It only has one piston...

[ohsobad_chevy]

LOL!

[ckb2008]

sorry im a noob lol, the cylinder rods i guess they are called? the four that are in the engine head....

Uhm...no it doesnt run but it will turn over.

someone i asked said it might be a ring in one of the cylinders making it lose compression.

maybe that will help i hope.

Any ideas?
Thanks!

[81 clark racing]

i think your talking about the spring looking things called valves...maybe

[ckb2008]

yea the spring looking things, the valves i mean, can you help any or just make fun of my ignorance towards the parts of a engine?

[BakerRacing40]

so when it popped it died then? or did you stop and it wouldn't restart? you'll have oil by your valve train components, no worry there..

pull your spark plug out and put it in the boot and hold the rubber part and make the spark plug touch the head and crank the engine, you should be able to see if your getting spark.. i'd start there...

everybody has to learn some time about these thing or everybody would be in the poor house even worse if we took it to a dealer and paid 85 bucks an hour to get work done..

[ckb2008]

i originally thought it was the spark plug, i replaced it and already check the boot for spark, and it is perfectly fine sparking like a champ.

yea i know they are exposed to have oil, but only one of the valves had standing oil around it which i considered odd.

maybe something happened to that rod and it wont work???

it popped in 5th gear when i was topping it out and when i heard it it started dieing so i pulled in the clutch and rode it till it died.

[BakerRacing40]

on the shifter side take out the big plug, i think it's 8mm allen head and take a 17mm socket and ratchet and rotate the engine clock wise. since you have the valve cover off you can watch you valves move. the two on the intake side should move at the same time and the two exhaust should move at the same time. if you take the spark plug out you'll be able to rotate the engine around easier..

[nakomis0]

You need a service manual... or a mechanic.

[81 clark racing]

[QUOTE]Originally posted by ckb2008
yea the spring looking things, the valves i mean, can you help any or just make fun of my ignorance towards the parts of a engine? [/QUOTE

seeing your such a rude s.o.b no thanxs i was just trying to figure out what your were talking about

[ckb2008]

sorry at my failure to not distinguish between sarcasm and non sarcasm 81 racing but it seemed as if you were being just being another rude chode over the internet, im sorry.

[kd450r]

400EX's are famous for popping the pickup coil on the stator. One bit of advise and please don't take offense to this, its just a saying, K.I.S.S Keep It Simple Stupid. I would almost be willing to bet you lost spark and that why it wouldn't start. Check it out man.