Mazda5 diesel engine problem.

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4 Mar 2014
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Merseyside
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United Kingdom
Hello everyone.Got a Mazda 5 recently ,one week drove with no problems,but one day parked up,returnet to car,tried to start,but could not.Starter kranks engine,but not starting.Checked via bluetooth obd adapter,no any fault codes except u3fff(unknown code).Towed to garage,their diagnostics did'nt said anything.With start gas could start engine and its runs like a dream,but when turned off can't start again.Checked fuel pressure: present on rail,brought injectors to test-all good.
Do anybody got any guess,what maight be a cause of this problem?
 
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Difficult to diagnose problems like this over the internet but i would start by looking at the crankshaft position sensor and its wiring.
Are you saying it continues to run when given a squirt of easy to get it going?
 
Easy Start, huh? Nasty!
Consider a compression test maybe.....is there any sign of white smoke when the car is cranking over?
John :)
 
Mehanic now took injecors off get them tested/cleaned,puted them back,changed fuel filter,and now car starts and check engine light gone off,but....
Mehanic says now engine rattles.Asked what ratles,where,he couldnt say,just said that engine is ****d.
Thats mean he did something wrong or dropt anythin in engine while installing injector back.Engine didnt ratle before.
 
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Easy start, who was on the can controlling the volume of knock before it started? Would you think the easy start might have something to do with the noise?
 
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