Horrible Gas Milliage w/ GSR

[kl33]

I have 92 GSR with 229k km
Just had the timing belt replaced along with the water pump and new muffler
car seemed to be running great

i filled the car up last week and only got 9km/L and again the same thing this week!!

i'm not driving hard at all.
rev are low when idling under 1Grand in neutral.
in town driving so i know that the millage wont be as good as highway.
was was getting close to 550km/tank now 340km/ tank.


what should i check?
what do you guys get?
what could be wrong?

[n00bit]

Spark plugs.

[Hemi RT]

Originally posted by kl33
I have 92 GSR with 229k km
Just had the timing belt replaced along with the water pump and new muffler
car seemed to be running great

i filled the car up last week and only got 9km/L and again the same thing this week!!

i'm not driving hard at all.
rev are low when idling under 1Grand in neutral.
in town driving so i know that the millage wont be as good as highway.
was was getting close to 550km/tank now 340km/ tank.


what should i check?
what do you guys get?
what could be wrong?

Your timing belt may be out a tooth or 2, this can, in some case either increase or decrease your mileage and yet the car will still run well.

[cressida_pimpin]

clogged injectors?

get some fuel injector cleaner

[IntegraG2]

your o2 sensor might be on its way out. I would also check for a clogged fuel filter along with what was said above....

[QuasarCav]

Have your driving habits changed at all? Anything over 400kms for my GS-R is good and my car is all tuned up.

I would check the usual maintenence items first though.

[TegLover]

CHECK TIMING

[SilverGS]

heh heh I had a thread like this not too long ago.

This is what I did and am in the middle of checking to see if it helped any on my 99 GS

- Changed Spark Plugs (NGK Iridium)
- Changed Spark Plug Wires (NGK)
- Changed Air Filter (OEM)
- Changed Distributor Cap and Rotor (OEM)
- Changed Oil and Oil Filter

Still going to change the Fuel Filter

I also had a 4 wheel alignment done and checked the tire pressure.

Other things to check
- O2 Sensors
- Fuel Injectors

From what I have read tire pressure, air filter, and spark plugs are some of the bigger factors for mileage. Check those first