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The mkiv Supra Owners Club

NA Engine cranking, no spark..


rob_sri

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Hi all,

 

the supra is playing me up recently! heaters have stopped working and now this ! its a 94 NA..

 

usually it starts first time every time on the first crank and yesterday it was driving fine last night and nothing unusual

 

go to start it this morning it spluttered and just continued to crank..

 

quick visual check and I could see nothing out of place..

 

pulled a plug and it was wet.. (with fuel) dried it off and touched it against the block.. got a friend to crank it and it didnt spark..

 

battery seems fine as it cranks quickly

 

what would be next to check? any suggestions of what it could be?

Edited by rob_sri (see edit history)
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HT leads/dizzy cap&rotor arm.

Do a drop test mate. If you want me to come round tomorrow I'll do it with you!

 

Dizzy cap if there is no spark at the plug.

 

thanks :)

 

luckily I have a spare dizzy assembly.. its really odd that last night it was brilliant, took it for a good run and it was pulling well and this morning nothing!..

 

i'm at work tomorrow till around 3-4ish drop me a text mate :) would be great if you're about mate!

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if its the coil, in my experience they tend to break down and start misfiring under load but run OK at idle etc.

 

I normally work way back from the plugs replacing plugs, leads, cap, arm, igniter, coil.

 

If its just suddenly stopped though i'd check for a loose connection on igniter / coil etc too.

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Yeah.. I mean it didn't cut out or anything I turned it off and the next morning wouldn't start..

 

It may have been a loose connection from the igniter-dizzy but wouldn't start last night as It had flooded..

 

I pulled all the connections off and gave them a quick spray with WD40 to make sure there was no moisture in there

 

This morning no issues after the plugs had dried out but doesn't explain the no spark..

 

Il just have keep an eye on it now I suppose!

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