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April 23rd, 2020, 09:01 PM   #1
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I Ride: FE 400 1998
Ignition timing problem

I have an FE400 1998 that won't start and i'm quite sure it has to do with the timing but how do i change it and what marks am i looking for? And how do i know when the sparkplug sparks without the engine even starting at all?

Last edited by Pedro Daquota; April 23rd, 2020 at 10:19 PM.
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April 23rd, 2020, 11:34 PM   #2
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try and run a 1m fuel line to the bike and keep the tank out of the way.

always put the bike on a paddocxk stand or a scissor lift. always wear MX boots, nothing gives the confidence to kick HARD like an MX boot.

lay the plug on the head in the cap and then kick. you should then see the spark. it may be orange or blue. don't worry about orange as this often improves to blue when they start (at last).

I have a video on my Facebook page about timing a 600. maybe you'll see some advice there. I have always found the 1989-1998 to be completely fucked up.

timing one is like being the serious detectiove officer interviewing the inmates of a mental institution. no logic, no sense.

but good luck!

Taffy
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April 23rd, 2020, 11:58 PM   #3
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Originally Posted by Taffy View Post
try and run a 1m fuel line to the bike and keep the tank out of the way.

always put the bike on a paddocxk stand or a scissor lift. always wear MX boots, nothing gives the confidence to kick HARD like an MX boot.

lay the plug on the head in the cap and then kick. you should then see the spark. it may be orange or blue. don't worry about orange as this often improves to blue when they start (at last).

I have a video on my Facebook page about timing a 600. maybe you'll see some advice there. I have always found the 1989-1998 to be completely fucked up.

timing one is like being the serious detectiove officer interviewing the inmates of a mental institution. no logic, no sense.

but good luck!

Taffy
Okay so i'm a bit confused when engine is at tdc where is the marking on the flywheel supposed to be? And how do i know when the sparkplug ignites because i think it's igniting very wrong and if so where and how do i adjust it?

Last edited by Pedro Daquota; April 24th, 2020 at 12:06 AM.
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April 24th, 2020, 02:30 AM   #4
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look up 'the dead stop method' on the internet.

there is a small mark on the flywheel that will come to the mark indicated in the photo. But I have never trusted it.

the adjustment is done at the screws I also arrow.

basically, if an engine is easy to kick over and never backfires or stopd you it is too retarded. too late to spark.

so get to nthat and start to advance it a bout .25mm at the screws/0.5mm at the perimeter of the stator.

make sure the round slide in the PHM carb is 6-6.5mm off the bottom.

Taffy
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Ignition timing problem-20170515_160506.jpg  
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April 24th, 2020, 02:39 AM   #5
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Originally Posted by Taffy View Post
look up 'the dead stop method' on the internet.

there is a small mark on the flywheel that will come to the mark indicated in the photo. But I have never trusted it.

the adjustment is done at the screws I also arrow.

basically, if an engine is easy to kick over and never backfires or stopd you it is too retarded. too late to spark.

so get to nthat and start to advance it a bout .25mm at the screws/0.5mm at the perimeter of the stator.

make sure the round slide in the PHM carb is 6-6.5mm off the bottom.

Taffy
Thanks, this helped me out a lot

I'm quite sure the timing is as retarded as it can go because it never backfires or stops and it's very easy to kick as you said so as soon as i get home i'm gonna try advancing the timing and check the round slide in the carb and see what happens and just a quick question, how much does too big gap in the valve clearance affect the engine?

Last edited by Pedro Daquota; April 24th, 2020 at 03:15 AM.
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April 24th, 2020, 03:52 AM   #6
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I removed the tank and discovered that there's one hose that just hangs there but there's no fuel coming out of there so what could it be?

And what do you mean with the round slide in the carb?
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Ignition timing problem-20200424_134455.jpg  

Last edited by Pedro Daquota; April 24th, 2020 at 03:56 AM.
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April 24th, 2020, 04:08 AM   #7
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the loose pipe
that goes to your inlet port. that activates the pump diaphram....makes it pump!

the advice I give is for the roundslide PHM dell orto and not the earlier square slide VHSB carb.

loose valves are as bad as tight valves when starting. obviously no real damage that is the only difference.

you really must get them right.

Taffy
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April 24th, 2020, 04:44 AM   #8
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Originally Posted by Taffy View Post
the loose pipe
that goes to your inlet port. that activates the pump diaphram....makes it pump!

the advice I give is for the roundslide PHM dell orto and not the earlier square slide VHSB carb.

loose valves are as bad as tight valves when starting. obviously no real damage that is the only difference.

you really must get them right.

Taffy
Thanks, just one more question how do you get the flywheel off after the nut is removed?
And i found Tdc and it seems to be lining up with the mark on the picture you sent
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April 24th, 2020, 05:13 AM   #9
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I used to put a narrow shaft in through the plug hole and jam it to one side and let the piston touch it one way and then the other. if you can get them to touch about 20mm left and right (total of 40mm apart) then it is easy to measure the middle. control the flywheel with a T-bar or a stepped ring spanner.

as for removing the flywheel, well you'll need to buy a pulling tool. don't try a two legged puller. youwant something that threads into the middle thread.

I have them for sale.

regards

Taffy
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April 24th, 2020, 05:19 AM   #10
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Originally Posted by Taffy View Post
I used to put a narrow shaft in through the plug hole and jam it to one side and let the piston touch it one way and then the other. if you can get them to touch about 20mm left and right (total of 40mm apart) then it is easy to measure the middle. control the flywheel with a T-bar or a stepped ring spanner.

as for removing the flywheel, well you'll need to buy a pulling tool. don't try a two legged puller. youwant something that threads into the middle thread.

I have them for sale.

regards

Taffy
I discovered that during compression stroke the exhaust valves opens so slightly and releases the compression??? Is that why it's so easy to kick because i think that's not how it's supposed to be.
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