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Discussion Starter #1
When I bought my 1.8 156 seven months ago it was returning a reasonable 30 mpg around town. Recently I have been filling up a lot more and the computer is telling me I am doing around 19 to the gallon.

The only major thing done in recent weeks is the timing belt has been changed and the other strange thing is that there is water in the exhaust

The car runs fine and I do not drive it hard, I can not find any leaks

Any ideas anyone please
 

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Are you loosing any coolant?
Was the cambelt done by an Alfa specialist, or just a general garage?
 

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I hope for you that the belt was not fixed one tooth wrong ! it sounds silly, but that changes the efficiency of the engine considerably
 
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I bet the cam timing is out.
+1

You might want to ask them whether they used the proper cam locking tools. Gien the fuel ecoomy was okay before they touched the belts its the logical place to start
 

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Discussion Starter #10
een to the garage this morning and they said they had done many Alfas before without problems, they want to replace the plugs :( , plugs replaced two years ago about 14,000 miles ago.

Wonder if I took it into Alfa on there diagnostic gizmo would it pin point the fault?
 

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another suspect is the the thermostat... if it stays below 70 , the engine is running too rich. New stat is about 50 quid, worth a try
 

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another suspect is the the thermostat... if it stays below 70 , the engine is running too rich. New stat is about 50 quid, worth a try
+1 ... worth a shot
 

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een to the garage this morning and they said they had done many Alfas before without problems, they want to replace the plugs :( , plugs replaced two years ago about 14,000 miles ago.
if they are the proper NGK Platinum's they are good for at least 60K ... my first set lasted 73K!

Wonder if I took it into Alfa on there diagnostic gizmo would it pin point the fault?
They can, but will probably charge you at least £80 for the privilege!! Then the MAF may not show up if it is just starting to fail .. but that would also be accompanied by other problems .. flat spots.

My money is on the lambda if the temperature looks OK (stays at or around 90 on the gauge).

Make sure it's a proper BOSCH lambda sensor. The cheaper NTK one is the wrong ohm rating and can cause problems.
 

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Discussion Starter #16
Warrington, near enough to wirral

Car runs just fine, temp is fine, no flat spots, lots of power, does not use oil or water, does not smoke
 
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