Mk1 mx5 93 will crank but won't start

[lockey1995]

So the other night I went out with some friends driving and all was fine,on the way home luckily not far away as I was exiting a bend it dropped to 3k rpm and wouldn't go above 3.5k and felt like a missfire car was jumpy.

It gradually got worse but I was only 5 minutes away so I thought Id limp it back and luckily I got it on the drive where it died completely as soon as I let off the throttle. Now it won't start at all it will crank but won't fire. So me and my dad have looked at it today and so far we've checked all plugs and checked for spark which there is, checked fuel line to see if there's fuel, checked fuses and fuel pump seems fine also.

I checked dipstick and there was barely anything on it which scared me I did top it up about 5 days ago but this could be a lesson learned if it's bad. Should always check esp before a fun drive out with friends. So I'm hoping there isn't anything seriously wrong It isn't seized I've checked for that aswel, topped up again with what oil I did have left maybe a quarter of a liter and it's gone to just above low on the dipstick.

What do you reckon it could be my dad reckons sensor or the cas which I haven't looked at yet.

[Belle427]

Have you had a look at the Ecu to check its not sat in water?
If you appear to have spark then id look at the fuel side, a squirt of easy start up the intake can give you a clue as it should run for a second or two on that.
Some noid lights are handy here to see if the injectors are triggering, they are not expensive.


https://www.amazon.co.uk/Sealey-VS213-Noid-Light-S...

[smokey mow]

Have you checked for fault codes on the diagnostics connector yet?

Is the engine completely standard or modified in any way? Eg cone filter, vernier cams etc.

[lockey1995]

smokey mow said:

Have you checked for fault codes on the diagnostics connector yet?

Is the engine completely standard or modified in any way? Eg cone filter, vernier cams etc.

Just finished work, no I havent yet I do have one of those led testing kit things though from my old one might just put that in and see if anything does come up. As far as im aware stock a side from a cone filter.

[lockey1995]

smokey mow said:

Have you checked for fault codes on the diagnostics connector yet?

Is the engine completely standard or modified in any way? Eg cone filter, vernier cams etc.

Just finished work, no I havent yet I do have one of those led testing kit things though from my old one might just put that in and see if anything does come up. As far as im aware stock a side from a cone filter.

[smokey mow]

lockey1995 said:

smokey mow said:

As far as im aware stock a side from a cone filter.

In which case, check your breathers carefully to ensure that firstly everything is plumbed correctly and secondly all the air entering the Throttle body passes through AFM first. I’ve sent plenty with open breathers, catch tanks fitted and PcV valves removed which are all allowing unmetered air in.