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ZUKIWORLD Model Specific Suzuki Forum => Suzuki Samurai (All SJ Platform) 1981-1998 => Topic started by: jEm on October 05, 2010, 07:51:00 PM

Title: G13a fuel consumption problem
Post by: jEm on October 05, 2010, 07:51:00 PM

Hi Guys,

I just did a major service on my SJ413, timing belt, crank seals, cam seals, oil change, plugs etc.

Car is running like a dream, only problem is that she now consumes so much more fuel than prior to the service.

I use to get 300kms per tank, now it's significantly dropped to under 200kms per tank. Any ideas as to what the problem could be? Have I accidentally adjusted something I shouldn't have??

Please help.

Title: Re: G13a fuel consumption problem
Post by: Drone637 on October 06, 2010, 03:03:33 PM

The only thing I can think of is if your carburetor now needs a bit of a tune-up.  You shouldn't see a 30% drop in mileage over a tune-up.

Have you double checked your timing?

Title: Re: G13a fuel consumption problem
Post by: jEm on October 10, 2010, 05:14:37 PM

Mate, thanks for reply.

I'm hoping the carby is ok, she is ideling a little higher than usual, might shine the timing light on her and check it out.

Are there any key signs of timing being slightly off?

Title: Re: G13a fuel consumption problem
Post by: Drone637 on October 10, 2010, 11:30:56 PM

Idle being off, usually you will notice the power being at a different spot then before, or a dead zone in your throttle.  You might try running higher grade gas, if your idle is to far advanced it will run much better with premium fuel.

Title: Re: G13a fuel consumption problem
Post by: Rhinoman on October 11, 2010, 07:26:18 AM

Did you gap the spark plugs before fitting them?

Title: Re: G13a fuel consumption problem
Post by: tipover on November 09, 2010, 04:46:10 PM

I think you should put a timing light on it.  that will also tell you it the timing belt is off a tooth.  interesting problem.  keep us posted.