need a little help

[lowrider89]

I have an 89 fzr 600 last at the end of last year my VR crapped out on me and took out my battery i since have replaced the vr and battery now she won't start.when i do try to start it number three carb flames and there is a shot gun size backfire. Its getting fuel and there is spark just can't get my baby to fire any suggestions will be greatfully appreciated.

[rotortech]

Could be the firing order. Did you have the plug wires off? You might double check your plug wires.

[lowrider89]

I checked the firing order its ok

[yamaha_george]

Hi,
with the VR biting the dust it may have taken part of the TCI with it :-{

Ask DonTZ125 how to remove the TCI cover to inspect it

[DonTZ125]

The only way I've successfully opened a TCI has been to soak it in acetone overnight. Hitachi used the waterproof coating on the circuit board as the glue that holds the box shut; unfortunately, dissolving it enough to get the board out also ruins it as a protective coating, so - even if there is nothing wrong - the board must be stripped and re-coated.

Failing to recoat it means leaving a very expensive bare PCB exposed to the elements - and if you thought CONNECTORS fouled out under rainy-day conditions ...

[yamaha_george]

The only way I've successfully opened a TCI has been to soak it in acetone overnight. Hitachi used the waterproof coating on the circuit board as the glue that holds the box shut; unfortunately, dissolving it enough to get the board out also ruins it as a protective coating, so - even if there is nothing wrong - the board must be stripped and re-coated.

Failing to recoat it means leaving a very expensive bare PCB exposed to the elements - and if you thought CONNECTORS fouled out under rainy-day conditions ...

DonTZ,
when you say stripped you mean of components or of the gumph that is left of the coating after acetone hits it?

[DonTZ125]

Stripped of the rubbery, perforated gunk that used to be conformal coating.

Removing the components - gahh! What a nightmare that would be!

[yamaha_george]

Stripped of the rubbery, perforated gunk that used to be conformal coating.

Removing the components - gahh! What a nightmare that would be!

Don,
so basically remove any tainted coating and cover back with what................. varnish? rubber potting compound ? plastidip ? Dunno ..............

[DonTZ125]

Dealer's choice - basically anything that's electrically insulating and will protect the components.