16v backfire/cutting out

[danny_p]

rev counter droping to zero is the give away.

its electrical on the low tension side of things.  dizzy caps and leads wont cure it

ether power / ground issue ecu tci h.  loom or hall sender  or bad connnections to the coil.
you swaped dizzys so shouldnt be ,  unliely to to be the coil as weack spark shows up under load.  unlikely to be the tcih .

id be looking at all the connectors on the looms for sings of suboptimalness,  general condiion of the loom  often get wires fail where they go round the engine,  oil + heat  kills wires. 

[jonny-5]

Found the problem! Started testing the tci switch and then the efi controller all was well. Then I noticed the that some of the pins on the controller had signs of water corrosion, so I thought as I've cone this far I may as well open up the controller and check for damage. However no damage was found buuuutt the vac hose to the unit inside the controller was hanging lose and not doing anything! So can I pursume that it was not advancing the timing at all? I know it would have been rather sluggish but I haven't given it some beans in fear of something disasterous happening!

So I put it back on, connected everything and away I went. Only went for a short drive, it usually would have backfired ect about 5 time in the distance I went, but it drove lovely. I'm sure I couldn't have blown this pipe off when testing (blowing down tubes ect). A full test drive shall be conducted tomorrow morning.

Thanks for your input everyone

[Diamond Hell]

More likely to be the moisture-damaged pins than the disconnected hose.

You've shoved everything around and re-connected things, so it's happy again.

Might be worth making sure everything's clean and dry so you don't get the problem coming back again.

[jonny-5]

Yeh thought it was weird, don't see how that hose could have come off though - it's on pretty tight