3.2 carrera no spark?
3.2 carrera no spark?
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Discussion

LWT RSR

Original Poster:

399 posts

187 months

Wednesday 7th November 2012
quotequote all
Can anyone give me any advice as where to start to look for problem.

Took N/S/R wheel off to clean the inner arch after a light hosing to get rid of

dirt put wheel back on then tried to start but nothing.

Motor turns over strongly but doesn't catch.

Is it because I hosed under there perhaps or could it be something else?

Your thoughts and comments would be most welcome chaps.

1985 3.2 Carrera.

stup

238 posts

237 months

Wednesday 7th November 2012
quotequote all
Are you sure it is spark? Have you checked for that..
If your not sure and are just guessing no spark I would first personally start checking DME relay, sits under passenger seat
In your car, these are common to fail and would stop the fuel pumping through which obviously would cause the engine just to turn over.. Should ideally carry spare DME relay at all times anyway as potentially will fail at sometime

robseagul

344 posts

243 months

Wednesday 7th November 2012
quotequote all
The dizzy is also in that area.the can get do as both my 911,s did .it might be worth a shot of wd i.r

robseagul

344 posts

243 months

Wednesday 7th November 2012
quotequote all
The dizzy is also in that area.the can Get wet as both my 911,s did .it might be worth a shot of wd i.r

nurburgring1

617 posts

230 months

Wednesday 7th November 2012
quotequote all
You might want to try impactbumpers.com

rubystone

11,254 posts

289 months

Wednesday 7th November 2012
quotequote all
Wiggle the DME under the passenger seat - if necessary remove it completely and reinsert. If that doesn't work, I would suggest that you try to borrow one from someone - it's nearly always these littel buggers that cause the problem and it's probably coincidence that it failed after you jet washed the car (or maybe water ingress to the passenger floor area may have caused it to fail)

LWT RSR

Original Poster:

399 posts

187 months

Thursday 8th November 2012
quotequote all
Thanks guys I'll try all that and hope I can solve it.

LWT RSR

Original Poster:

399 posts

187 months

Friday 9th November 2012
quotequote all
Have replaced the DME relay and new Bosch distibutor and rotar arm.

Engine turns over strong but still wont catch.

Turned engine over with a plug lead out of the engine with plug in it ..no spark at the plug.

Is there anything else I might have missed or could check?

thegoose

8,077 posts

240 months

Friday 9th November 2012
quotequote all
I struggled with this once and daft as it sounds it was out of fuel (gauge read nearly 1/4 tank too) so do make sure there's plenty in there. There can also be problems with the spark plug wiring harness.

steve singh

3,995 posts

203 months

Friday 9th November 2012
quotequote all
thegoose said:
I struggled with this once and daft as it sounds it was out of fuel (gauge read nearly 1/4 tank too) so do make sure there's plenty in there. There can also be problems with the spark plug wiring harness.
But he's getting no spark - so why would that be a fueling issue?

Big_Dog

995 posts

215 months

Friday 9th November 2012
quotequote all
Wheres is the immobiliser/alarm control box. I had problems with mine and had similar symptoms.

thegoose

8,077 posts

240 months

Friday 9th November 2012
quotequote all
steve singh said:
But he's getting no spark - so why would that be a fueling issue?
Sounds odd, doesn't it? When mine was out of fuel there was no spark either, so worth eliminating the possibility. I'm not sure what signals are given to other systems when there's no fuel going in though.

OlberJ

14,101 posts

263 months

Friday 9th November 2012
quotequote all
Unsure about the 3.2 but can you hear the fuel pump priming with ignition on?

With previous cars if you don't have a running fuel pump/shoddy relay it can cut the spark too.

LeighB

3,858 posts

255 months

Friday 9th November 2012
quotequote all
LWT RSR said:
Have replaced the DME relay and new Bosch distibutor and rotar arm.

Engine turns over strong but still wont catch.

Turned engine over with a plug lead out of the engine with plug in it ..no spark at the plug.

Is there anything else I might have missed or could check?
I had the exact same symptoms on mine and problem was down to a failed crankshaft sensor. Had both replaced a all sorted.

LWT RSR

Original Poster:

399 posts

187 months

Friday 9th November 2012
quotequote all
There is plenty of feul in it as I put about £60 in the other day.

Checked the DME relay contacts were closing when I turned on the ignition the turned

the engine over.Was thinking of replacing the Ref sensor .Can this be done with the

engine in or not and would you change the speed sensor at the same time to eliminate

this from the equation? What about coil ???

LWT RSR

Original Poster:

399 posts

187 months

Wednesday 21st November 2012
quotequote all
LeighB said:
I had the exact same symptoms on mine and problem was down to a failed crankshaft sensor. Had both replaced a all sorted.
Leigh ,thanks buddy that has done the trick!