Renault Repair Questions? Ask a Mechanic for Answers ASAP
the price of £2000 for new injectors and pump is reasonable as injectors are about £120 each ( 500) and a pump is about £1000 then its several hours to remove a refit all the parts and code up the injectors
however there's a couple of things to check 1st before replacing the entire fuel system
If they remove an injector and find lots of little metal fragments nestling in the injector top then this would be a reason to replace everything as it means the main pump has picked up and pumped metal into everything
but if this is OK I'd get a pressure gauge onto the fuel rail after the pump to confirm if its not producing the fuel pressure its meant to - if its low then yes the pump will need replacing
but as you have no loss of power then I'd check the connections to the EGR valve, if either the vacuum pipe of electrical connection are damaged / corroded then the EGR can be on all time which certainly will hurt performance. Its also possible that its a fault with the EGR valve so its worth removing the valve and cleaning it out with brake cleaner, if it looks particularly clogged then replace it.
if the milage is now getting on a bit ( over 100K) and you're not especially attached to the car then it may now be wise to consider replacing it as if it does need a new pump & injectors then this would probably work out more than the car is worth
if the milage is over the 100K mark then its likely that the front struts may also need replacing ( £300 each side) and also other small bushes etc
You can check the struts if you bounce the car hard on each corner it should return to equilibrium within 1 bounce
To feel if there's a worn strut top bearing then lightly hold the spring by hand and have your assistant move the steering from left to right with the wheel on the ground - a worn bearing will feel 'notchy' through the spring. The wheel needs to be on the ground for the test to load up the bearing
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