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Hard warm starting #1632919
29/05/2019 12:34
29/05/2019 12:34
Joined: Feb 2019
Posts: 85
Behind a blue gate
clanger Offline OP
Reaping the fruits
clanger  Offline OP
Reaping the fruits

Joined: Feb 2019
Posts: 85
Behind a blue gate
Starts well from cold and likewise hot start (left for 10 minutes parked and engine up to temp.) but warm start i.e. left for an hour or thereabouts requires 5 secs of starter motor and then very reluctantly fires up. No performance issues when running, pulls like a train, idle is smooth and there are no codes stored.

I changed the water temp sensor which has put hot start on a par with cold and the thermostat operates correctly but warm start is still a pig.

Could it be coil packs on their way out? Last plug cut showed a bit of soot on the plug bottom, insulator clean but I also get a bit of soot on the tail pipe after a 20 mile run, is this normal on the Coupe?

Any advice welcome, Thanks

Re: Hard warm starting [Re: clanger] #1632922
29/05/2019 13:23
29/05/2019 13:23
Joined: Mar 2006
Posts: 864
Warrington
G_Man Offline
Club member 1656
G_Man  Offline
Club member 1656
Enjoying the ride

Joined: Mar 2006
Posts: 864
Warrington
Car details, mileage etc could be handy Clanger?

Re: Hard warm starting [Re: clanger] #1632924
29/05/2019 14:16
29/05/2019 14:16
Joined: Feb 2019
Posts: 85
Behind a blue gate
clanger Offline OP
Reaping the fruits
clanger  Offline OP
Reaping the fruits

Joined: Feb 2019
Posts: 85
Behind a blue gate
Yeah agreed rolleyes

20VT 1999 123k miles

Re: Hard warm starting [Re: clanger] #1632927
29/05/2019 15:05
29/05/2019 15:05
Joined: Sep 2006
Posts: 14,902
FCSS 01684 593187
Countrycruising Offline
Club Rep Europe, member 914
Countrycruising  Offline
Club Rep Europe, member 914
I AM a Coop

Joined: Sep 2006
Posts: 14,902
FCSS 01684 593187
Crank sensor or yellow connector of death.

Re: Hard warm starting [Re: clanger] #1632928
29/05/2019 15:16
29/05/2019 15:16
Joined: Feb 2019
Posts: 85
Behind a blue gate
clanger Offline OP
Reaping the fruits
clanger  Offline OP
Reaping the fruits

Joined: Feb 2019
Posts: 85
Behind a blue gate
Thanks for that.

I also suspected the crank sensor as I have seen it go faulty on 2 other Italian vehicles from the 90's however the nature of the failures lead me to rule it out in this instance. But with you saying that, for £25 delivered I think I will just change it.

I still have not figured out the YCoD. Is it under the dash near the drivers right knee?

Re: Hard warm starting [Re: clanger] #1632930
29/05/2019 16:32
29/05/2019 16:32
Joined: Sep 2006
Posts: 14,902
FCSS 01684 593187
Countrycruising Offline
Club Rep Europe, member 914
Countrycruising  Offline
Club Rep Europe, member 914
I AM a Coop

Joined: Sep 2006
Posts: 14,902
FCSS 01684 593187
YCOD is next to the fuse board right hand side under the column, it's a connector 40x20 with a green/black wire and a thinner pink or orange, usually just these two wires and the green/black is the main feed to the fuel pump so it's prone to burning out the connection inside the plug causing it to be an intermittent supply sometimes.

Re: Hard warm starting [Re: clanger] #1632932
29/05/2019 17:10
29/05/2019 17:10
Joined: Feb 2019
Posts: 85
Behind a blue gate
clanger Offline OP
Reaping the fruits
clanger  Offline OP
Reaping the fruits

Joined: Feb 2019
Posts: 85
Behind a blue gate
Brilliant, thank you very much.

Re: Hard warm starting [Re: clanger] #1633348
13/06/2019 18:25
13/06/2019 18:25
Joined: Feb 2019
Posts: 85
Behind a blue gate
clanger Offline OP
Reaping the fruits
clanger  Offline OP
Reaping the fruits

Joined: Feb 2019
Posts: 85
Behind a blue gate
New crank sensor, YCOD removed, wires crimped and soldered together problem still there. Good strong cold start, better than before but after long run and hot engine, left for 45 minutes difficult start remains. Catches after about 5 seconds of cranking but slow to catch and build up revs to idle.

Will try a plug change but any other advice welcome.

Ta

Re: Hard warm starting [Re: clanger] #1633351
13/06/2019 20:28
13/06/2019 20:28
Joined: Dec 2005
Posts: 3,696
Pothole City
GrahamL Offline
Forum is my job
GrahamL  Offline
Forum is my job

Joined: Dec 2005
Posts: 3,696
Pothole City
Maybe multiple injectors failing at once.

Re: Hard warm starting [Re: clanger] #1633525
23/06/2019 11:03
23/06/2019 11:03
Joined: Feb 2019
Posts: 85
Behind a blue gate
clanger Offline OP
Reaping the fruits
clanger  Offline OP
Reaping the fruits

Joined: Feb 2019
Posts: 85
Behind a blue gate
For anyone reading this in future; I constructed the fuel injection leakdown tester as described in the manual and have traced the problem back to leaking injectors or injector. I need to replace the inlet rubber doughnuts so will check which or if all are leaking then.

Re: Hard warm starting [Re: clanger] #1633571
25/06/2019 14:49
25/06/2019 14:49
Joined: Oct 2008
Posts: 6,624
In the coupe.
magooagain Offline
Club Member 259
magooagain  Offline
Club Member 259
Forum is my life

Joined: Oct 2008
Posts: 6,624
In the coupe.
The problem sounds similar to a lhd coupe I owned,turned out to be the inlet doughnuts.



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