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ZUKIWORLD Discussion Forum => Technical Discussion - Beginner / Repair => Topic started by: badtoy4x4 on November 11, 2009, 07:45:41 AM

Title: weak fuel pump?
Post by: badtoy4x4 on November 11, 2009, 07:45:41 AM

my 97 4 door vitara with 1.6 engine AT is having power loss when AC is on or ascending a ramp or uphill pavement, or fording floodwaters. RPM is very slow to go up when on D and running.

My first doubt was the fuel pump. I had the pressure checked and its about more than 35psi. Would it be the fuel volume coming from the pump be too little even it has the correct pressure? Do I need to replace the pump?

Title: Re: weak fuel pump?
Post by: Rhinoman on November 12, 2009, 03:22:03 PM

If you don't have enough volume then the pressure will drop, if it was tested static then ithat may not be a reliable measurent. Its not unknown for bad connections behind the rear bumper to affect the fuel pump but more common is a partially blocked filter. The other thing to check is that there is a good connection between the A/C and the ECU load input. These aren't the biggest engines around and some power less is inevitable

Title: Re: weak fuel pump?
Post by: badtoy4x4 on November 16, 2009, 01:59:13 AM

more checks where done on the fuel pump and everything is fine.

Next step is have the injectors and throttle body cleaned. Now my question is how do I clean the injectors?