3rd time car has cut out under hard acceleration
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Senior Member
Joined: Mar 2014
Posts: 307
From: Livingston, Scotland
3rd time car has cut out under hard acceleration
In the space of about a year for the third time always when i am joining the motorway and i accelerate hard the van cuts out 
Saturday it was a bit dangerous as there was a car behind me
After that it sort of hesitates before restarting. Key dance brings nothing. Any ideas please
Saturday it was a bit dangerous as there was a car behind meAfter that it sort of hesitates before restarting. Key dance brings nothing. Any ideas please
Senior Member
Joined: Dec 2012
Posts: 705
From: UK
classic signs of air leaking into the fuel system, though could also be a leaky injector or safety valve.
surprised you didn't get a P1130 though.
Really need to monitor actual vs requested fuel pressure during hard acceleration - preferably full throttle up hill to put maximum demand on the fuel system. If that confirms it is not able to keep up with the required pressure then leak back test on injectors, check for leakage out of the safety valve, replace fuel filter and check for air leaks in the fuel lines.
As it has only happened 3 times, it may be the sum of a lot of little problems rather than one big one....which is going to be harder to track down.
Regards
Richard
surprised you didn't get a P1130 though.
Really need to monitor actual vs requested fuel pressure during hard acceleration - preferably full throttle up hill to put maximum demand on the fuel system. If that confirms it is not able to keep up with the required pressure then leak back test on injectors, check for leakage out of the safety valve, replace fuel filter and check for air leaks in the fuel lines.
As it has only happened 3 times, it may be the sum of a lot of little problems rather than one big one....which is going to be harder to track down.
Regards
Richard
Senior Member
Joined: Nov 2012
Posts: 1,782
From: Dumfries....
Richard is the man for this fault regarding this fuel pressure issue. The fault I've got but have learned to avoid, the power cuts down, prob temp limp mode, on acceleration but engine doesn't cut out. Still to test my pressure/temp sensor, got it ready with connectors but...
Thread Starter
|
Senior Member
Joined: Mar 2014
Posts: 307
From: Livingston, Scotland
classic signs of air leaking into the fuel system, though could also be a leaky injector or safety valve.
surprised you didn't get a P1130 though.
Really need to monitor actual vs requested fuel pressure during hard acceleration - preferably full throttle up hill to put maximum demand on the fuel system. If that confirms it is not able to keep up with the required pressure then leak back test on injectors, check for leakage out of the safety valve, replace fuel filter and check for air leaks in the fuel lines.
As it has only happened 3 times, it may be the sum of a lot of little problems rather than one big one....which is going to be harder to track down.
Regards
Richard
surprised you didn't get a P1130 though.
Really need to monitor actual vs requested fuel pressure during hard acceleration - preferably full throttle up hill to put maximum demand on the fuel system. If that confirms it is not able to keep up with the required pressure then leak back test on injectors, check for leakage out of the safety valve, replace fuel filter and check for air leaks in the fuel lines.
As it has only happened 3 times, it may be the sum of a lot of little problems rather than one big one....which is going to be harder to track down.
Regards
Richard
Thanks Richard. I forgot to mention there is always a puff of black smoke when ghis happens, I don't if it helps paint a better picture for you
Any idea how much a leak back test is roughly. ?
Senior Member
Joined: Nov 2012
Posts: 1,782
From: Dumfries....
Check you tube as there is several vids as to testing rail pressure loss. Just noticed one yesterday of guys car not starting very well. Then shows bottle filling up from from pressure leak back valve. It's a case of where do we start when this happens, cutting out or not starting. You've to start somewhere and this is a good start followed by injector leak off tests.
Should we all be doing this at service intervals so we are warry of whats coming and be prepared.
Should we all be doing this at service intervals so we are warry of whats coming and be prepared.
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