Davethewave
New member
- Joined
- Mar 23, 2016
- Messages
- 6
- Points
- 2
Hello everyone,
My punto 1.9 JTD starts first time from cold. 100% reliable and good mpg. Very different starting when hot, when I sometimes have to turn it over for many seconds, several times, until it eventually fires and keeps running. It seems to keep almost firing whilst cranking but never quite getting going. I thought it might be fuel starvation and changed the filter - no difference. I have changed the Crank sensor for a good new one - and checked that it's seated properly. (I definitely took out the old rubber seal).
I cleaned the egr valve - no difference. Blanked it off - no difference. Leak test at local garage gives all 4 injectors the same.
I thought it might be a fuel pressure problem so used multiecuscan to check. Fuel pressure looks ok, but if I record a graph of graph total fuel quantity while trying to start it sometimes stays at zero (not starting) and sometimes jumps up and down from zero to 20-25mg/i (spluttering) until it starts and then idles at around 8-10mg/i.
What could be stopping the ecu from opening the injectors?
No fault codes are recorded.
Any ideas? If I don't resolve this soon then it's going to have to go on ebay for spares or repair!
My punto 1.9 JTD starts first time from cold. 100% reliable and good mpg. Very different starting when hot, when I sometimes have to turn it over for many seconds, several times, until it eventually fires and keeps running. It seems to keep almost firing whilst cranking but never quite getting going. I thought it might be fuel starvation and changed the filter - no difference. I have changed the Crank sensor for a good new one - and checked that it's seated properly. (I definitely took out the old rubber seal).
I cleaned the egr valve - no difference. Blanked it off - no difference. Leak test at local garage gives all 4 injectors the same.
I thought it might be a fuel pressure problem so used multiecuscan to check. Fuel pressure looks ok, but if I record a graph of graph total fuel quantity while trying to start it sometimes stays at zero (not starting) and sometimes jumps up and down from zero to 20-25mg/i (spluttering) until it starts and then idles at around 8-10mg/i.
What could be stopping the ecu from opening the injectors?
No fault codes are recorded.
Any ideas? If I don't resolve this soon then it's going to have to go on ebay for spares or repair!