BonFre

800 drinking lot of fuel

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Of late my 800 has been consuming a lot of petrol. It must be giving an average of ~ 5-8km/L. Trips to bunks have become an order of the day, burning 200-300/- daily.

 

Some history of the car: Its a 95 model with A.C. Done ~1.5L km or more.

Driven by all sorts of drivers, been through couple of bangs, all small ones though. One bang was a serious one, a Lancer hit it on the right side tyre thus bending the L-arm & body. A.C. compressor used to touch the body & make weird noises when the car would pass over bumps/speedbreakers. Maruti service station gave an estimate of ~ 8k for the job which they said would be carried out using pulleys. Local mech. tightened the foundations & noise completely disappeared. Job done for 20 bucks.

 

Complained to him about poor FE, timing was done & mixture adjusted apart from usual service which included engine oil, oil filter, air filter change. The problem still exists.

 

What could be the cause & how to rectify?

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@BF;

Haven't your M800 undergone any Major Engine Works or Overhaul job till to date ??

IMO, An 800 with AC & 1.5 lakhs reading on its Odo-meter desperately needs this & most probably the reason behind the Low FE, low Acceleration, etc..  

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Winner, no Cat Con in there.

 

Nishu, No overhaul till date. Its consuming normal amounts of engine oil.

A.C. remained disconnected for most part because car was used by drivers. Ive recently only got it re-connected.

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BF,

Change piston rings, my brothers M 800 which has run 1.2L kms & a 93 model non a/c. Had the same problem now after change of Piston rings he gets a FE of 11 -12 kms/liter.

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Petrol being volatile minor spills car just evaporate. Also, the fuel line to the bonnet is shielded so it is even tougher to spot. Try adding a bit of lube to the petrol (not good for pollution!) and maybe the leak will show up. 

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I suggest you to get your exhaust checked, if is OK..then its a leakage problem.

but if the results arn't OK, then you need to get your carburettor fixed followed by brake liners and then atlast the pistin rings and valves. 

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