19 mpg

[tracker]

Is this about right for my 86 9000 Turbo cos i dont think it is. Do anybody have and remidies or reasons for this low milage.

[9000anni]

No way is that correct.

It is difficult to say what could cause this, It could any number of things.

Do yu have any unusual symptoms ? Difficult starting, misfire issues or anything similar to help diagnose the fault, as it could be anything from mechanical wear to a faulty component, to being just needing a good servicing.

[greenphotos]

Originally Posted by 9000anni

No way is that correct.

It is difficult to say what could cause this, It could any number of things.

Do yu have any unusual symptoms ? Difficult starting, misfire issues

Mine is difficult to start sometimes and backfires occasionally when starting, and i get CR*P mpg any ideas?

Mark

[valbowski1980]

19 Highway?

[kemosaabey]

if thats US gallons, quite possible with city driving/heavy right foot...

Also if you're going by the EDU, they're not always that accurate..

[tracker]

UK gallons and thats suburban driving. Nothing seems to be the matter starts fine and no back fireing. Apoart from a petrol smell when its ticking over. What mpg am i suppose to be getting

[djtaylor]

Fuel leak?

[chico_85]

Dirty air filter?

[9000anni]

As far as the MPG goes, you could in theory only get 19 MPG if it's being booted, I would imagine that given you can smell fuel then there is a leak somewhere than needs investigation, but it would have to be dramatic to account for the fuel loss if it's only giving 19MPG.

Has the car been serviced recently ? as this could be the reason for the low MPG.

I would start by checking for air leaks from hoses and around the inlet manifold, and take a look at the spark plugs to see what kind of condition they are in, you can tell a lot from these.
http://www.ngksparkplugs.com/techinf...q/faqread2.asp

But there are so many factors that can cause this, such as mechanical wear, valve timing, clogged air filter or a faulty sensor, it may be worth having a tuning specialist analize it on a rolling road.

My old 9000 turbo (84 model) gave about 26-28 Mpg, but I didn't drive it hard, on a motorway run, it delivered about 32 mpg.

Hope this helps. let us know what you find !

As for Marks backfiring, this can be down to valves, either wrong valve timing or needing regrinding, or air leaks in the system or really bad ignition timing. A compression check should help discover if it is a valve issue and try a visual check of vacuum pipes and listen for air leaks is all i can suggest.

[tracker]

Whats the best way for cheaking for air leaks. I dnont think theres a fuel leak cos there aint any stains on the floor.

[9000anni]

Hi,

Usually if you listen for a hissing sound at the pipes leading from the inlet manifold. Do a visual check for obvious signs of cracking etc.

You should be able to follow most of the pipes to their location, if possible, remove a tube and block off one end and try to suck on the tube to see if it can hold a vacuum.

Hope this helps.

Dave

[djtaylor]

Further to the checking for air leaks, try using a piece of washer tubing or similar as a simple stethascope.

David.

[microcat36]

If you are prone to leaving your car to idle when frosty or at any other time this can knock your mpg for six, found this out after i went for a run and got 33mpg couple of mornings frost, leaving the car to warm up instead of getting the scraper out and bingo 22mpg. try watching the mpg tumble when not in gear.