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Matt
Matt, Mechanical Engineer
Category: UK Car
Satisfied Customers: 20598
Experience:  BEng hons Mech engineering, in auto industry 22 years
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My ka sportsnhas been on 2 diagnostic machines they both say

Customer Question

Hi my ka sportsnhas been on 2 diagnostic machines they both say nothingvwrong yet when im driving its like i have ran out of petrolcar just dies on me five mins later startsagain goes a couple mile and does the same again [email protected] 2 different ones cant identify whats wrong with it im baffled can you help
Submitted: 9 months ago.
Category: UK Car
Expert:  sprinkles08 replied 9 months ago.

Hello and welcome to JustAnswer!

You may have quite a few things going on. I'm assuming that no fault codes were found, in which case you most likely aren't losing spark alone.

A loss of fuel pressure will usually cause the engine to hesitate or lack power as it dies rather than feeling like the key was shut off. A loss of fuel pressure would most likely be the pump but could be a loss of power or ground to it.

Does the engine die abruptly like the key was shut off or does it hesitate?

Expert:  Matt replied 9 months ago.

Hello

this sounds like a lack of fuel and could be a lack of fuel pressure from the electrical pump at the tank.

If the connections to the pump are corroded or damaged then the pump could stop at any time or could not be running at full speed. Check that its relay switches in and out and the relay contacts are clean and bright – replace the relay if in any doubt and do the same for the fuse,

Ideally measure the pressure at the injectors and if this is low check the pump as described and also consider changing the fuel filter as if this partially blocked this too will reduce pressure.

Customer: replied 9 months ago.
THANKYOU I THINK YOUR RIGHT IT DOES HESITATE TO STOP IT FEELS AS IF CAR IS RUNNING OUT OF PETROL WHRN THERES PLENTY OF PETROL IN IT HOW MUCH WOULD IT BE TO HAVE REPAIRED HOW MUCH FOR RELAY SWITCH AND FUSE TO BE REPAIRED AND ALSO FUEL FILTER WHAT WOULD BE THE COST TO HAVE THAT DONE PLEASE AND THANKYOU FOR YOUR ADVICE
Expert:  Matt replied 9 months ago.

hello

to replace a filter is about 0.5 hours labour and £20 in parts

and is the relay is faulty then this about £5 in parts and 10 mins to swop

I'd bank on a small garage needing about an hour to test the fuel pressure , fit a new filter if required

if the pump is faulty though this is bit more expensive (about £120 in parts) and an hour to fit

Expert:  Matt replied 9 months ago.

Hi

do you still need help?

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