New 84' Sj410 Not Starting

[RocFreya]

I should have mentioned that my carburetor is for an 84' model with added ECU functions on it. Many of these added functions are disconnected & the matching inlets for them on the carb. capped off.

These include the A.B.C.V. ( Air Bleed Control Valve ) & the M.C.V ( Mixture Control Valve. ) PCV valve (Positive Crankcase Vent ) & VTV ( Vaccum Transmitting Valve ) - All of which are only partially functional & the previous owner disconnected in what looks like an attempt to disgnose the no start complex.

I have checked with a multi meter the
WOTS ( Wide Open Throttle Switch ),BVSV ( Bi-metal Vacuum Switching Valve ) and BTS ( Bi-metal thermal valve) all of which have power & appear to be operational.

I've disconnected the ECU as recommened by the shop manual in order of diagnosis yet no change in behaviour is noticed.

[ScottieJ]

I've never seen an SJ410 with an ECU or anything other than a basic side draught carb? None of the UK models had an electronic dizzy, all of them had points and a condensor.

Have you got some pics of the engine bay and carb.

Sorry about the confusion, I only just noticed that you wasn't in the UK and I've never seen a 410 with a different fuelling and ignition set up.

[RocFreya]

Would be pleased to

[RocFreya]

I would assume that dropping all the ECU add ons wouldn't affect performanc. - It's mostly just for emmisions I believe.

[Rhinoman]

You can't just drop the add-ons because the ECU controls the fuelling by adjusting the mixture control valve based on feedback from the lambda sensor.
If you aren't getting fuel then I would start by testing the fuel cut solenoid - assuming that you've already tested the fuel pump.

[donkeychomp]

Does it have an alarm you don't know about?

[RocFreya]

A new carb without ECU controls is starting to look more appealing.

[RocFreya]

Got her started!

It was the timing - Cam & crankshaft were pretty off.

Repositioned the distributor, adjusted the valves & now she purrs.