I have a 99 Integra SE with 80KM. It has been well maintained (regular oil changes and maintenance etc) but for the last year my mileage has been getting much worse. I used to get 450 KM per 40 L during winter driving but now I barely get 375 to 390 KM per 40L. Driving pattern has not changed. I had the emmission testing done late last summer followed by the 72 KM maintance a month later. Everything came back OK except for the rear breaks. Had to replace them!!!! They were worn down to 5%. I thought that the poor mileage was due to the rear breaks never quite releasing (hence the abnormal wear) but after driving for 2 months with the new breaks the fuel consumption is still sh**ty. Any ideas?

 

Check:
- fuel injectors (clean/service them)
- spark plugs (replace if req.)
- throttle body (clean it)
- filters (air, fuel, oil)
- cylinder anomolies (low compression, misfire, knocking)
- valve timing
- clutch friction plate

 

Hi Level_7,

Thanks for the quick reply. As I mentioned, the car just had the 72K service which includes most of the items on your list. BTW what is a throtle body?

I haven't had the car checked for cylinder anomalies since there is no tell tale sounds of knocking, slapping (valve), loss of power or excessive exhaust (white or blue).

What would be some of the other associated symptoms with a problemed clutch friction plate (other then higher fuel consumption)?

Since day 1 I always had intermitent problems with either engaging 1st or reversed when the car was parked for a while. The dealership said that was typical for the teg, all I had to do was move the car a little (ie engage 2nd ever so slightly) and then I could access the gear. The other idiosynchrocy of this particular car is also associated with starting. 99% of the time the car starts within 3 or 4 cranks (pretty impressive when it's -30C) but every so often it would need to crank twice as long (regardless of outside temp). Dealership said that it was "the engine trying to figure out where the pistons were before starting". I was amazed that this mechanic was able to say that while keeping a straight face.

This car has been super in every other respect. A real blast to drive.

 

I can't help you with your problem but the throttle body is where the intake piping connects by the firewall, not by the filter. It's actually what the intake claps down on. I hope this helps with that.