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Matt, Mechanical Engineer
Category: Car
Satisfied Customers: 22750
Experience:  BEng hons Mech engineering, in auto industry 22 years
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We have a Suzuki Super Carry 1.3 petrol 54 plate. This van

Customer Question

We have a Suzuki Super Carry 1.3 petrol 54 plate. This van has no power. It is flat when trying to accelerate. We have replaced the complete exhaust system, replaced plugs, air filter, etc, There are no fault codes in the system, it starts with no problem, the idle speed is fine. Just one note, if we give full throttle, it hesitates, but if we slightly back off the throttle, it seems to pick up. Any ideas would be great
Submitted: 1 year ago.
Category: Car
Expert:  Matt replied 1 year ago.


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

1st thing to try is to remove the fuel filler cap and then flick the ignition on whilst listening for the brief ‘buzz’ of the pump

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 injector rail (should usually be around 3Bar / 45psi +) 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.

Expert:  Matt replied 1 year ago.


do you still need help?

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Customer: replied 1 year ago.
I do understand that giving information on a fault, when you are not with the vehicle, is very difficult. We did eventually sort the problem, the woodruff key in the crankshaft pulley had partially sheared and was putting the timing out. A new key and pulley solved the problem.
Expert:  Matt replied 1 year ago.

thanks for letting me know and glad you sorted it