Technical turns over but no spark/fire

[rich_2oo3]

right it sporting it will turn over but no sparks from the plugs or distributor rest of the car has power. problem has started since the head gasket went since then ive replaced gasket plug leads and coils and still happens ..... any ideas would be greatly appreciated

 

[rallycinq]

Sounds like a sensor has gone. Check the crank sensor hasn't been disturbed.

Cheers

D

Grumpy old git going fast downhill rather than downhill fast!!

 

[rich_2oo3]

we thought that but some times it starts up ok and once it gets warm it cuts out and wont start again and other times it just does it from cold .....

 

[dawozere]

map sensor pipe?

 

[rich_2oo3]

i would comment but i dont know what that is lol

 

[dawozere]

tells the ecu whether fuel is there or not so the ecu can send fuel in, sometimes it gets a bit blocked and therefore the ecu doesn't send anymore fuel in, and no fuel means no spark, fixitagaintommorrow would be the bloke to ask about it, i think you just take it off and give it a good blow with the air pipe down the local garage, but don't do it without checking with him first!

 

[bad_boy_racer]

Where is this map sensor pipe in the engine - or at least what does it connect from/to?
Cheers,
Matt

"No it's not a custard"

 

[rallycinq]

Map sensor is on the nearside at the rear of the engine compartment. It has a thin plastic pipe going from it to the rear of the manifold. The plastic pipe is secured to the sensor and the manifold by rubber pipes. Carefully remove the pipe and make sure that air passes throu it.

Cheers

D

Grumpy old git going fast downhill rather than downhill fast!!

 

[HP]

Map sensor looks at the vacuum in the inlet manifold and helps the ecu adjust the fuelling and ignition timing to best suit. If there's no spark, the ecu isn't giving out the power to the coils - something is broken / disconnected. Crank sensor is likely as Rallycinq says.

Pete.
1242cc cinq,turbo cinq,Cinqs&Seis Yahoo group,Clubcento

 

[rich_2oo3]

cheers for the help i will give it a try tommorow at my dads garage.... wish me luck !

 

[mckcrich]

Hi, Just a thought. check the main loom connector at the front of the engine bay. I had a similar problem with mine, and I think it as caused by a bad (corroded) conection on this connecter.

Regards,

michael

My Fto Isn't Asmuch Trouble

 

[rich_2oo3]

hey cheers for all the help we took the crank sensor out and the nipple on the end has completey gone broke or just burnt out dunno but we replaced that and it seams to be running ok so wish me luck on not breakin down anytime soon