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Preface
In Part-I
of this Article, I have tried to emphasise, amongst other things, on the
need for using Petrol Additives and guarding against irreversible damage
to OE Wiring Harness of an Mpfi Car.
Let’s
dig deeper into these two aspects now…
An
FAQ on Additives
I have a Maruti 800 and Zen LX.
Do the petrol/oil additives leave "Carbon" deposits in petrol
tank/engine ?
If yes, then what is the need to use them..... and also suggest the remedies
for the same as someone asked me not to use the petrol or the oil additives
for the vehicle as they create a problem in later stages by depositing
carbon content.
An enlightened view
Petrol Additives.
These are specially formulated 'Detergent' Compounds. They prevent Petrol
- especially the Unleaded one - from leaving behind any residues upon
evaporation in the fuel intake/delivery System - which mainly comprise
Gums and Varnishes.
In doing so, they also help better/complete combustion within the cylinders
- thus actually preventing the build-up of carbon
deposits over a period of time - which have their own undesirable side
effects.
Given the poor detergent qualities of our Unleaded Petrol, regular usage
of well-branded Petrol Additives is infact recommended by most OEMs in
their Owners Handbooks, especially for Mpfi Cars. These have no ill affect
whatsoever - either in short or long term.
The question of their leaving any 'carbon' deposits in the Petrol Tank
just doesn't arise. However, a word of caution here –
If one hasn’t
used them ever, say for > 15 kkm, and then suddenly starts using them,
there’s a good possibility of the earlier deposited gums and glues
now getting dislodged finding their way into the fuel tank via the ‘fuel-return’
system. This can clog the inlet filter of the in-tank electric fuel pump
and overload it - to eventual failure.
The only
sure-shot preventive remedy for this is to have your Carburettor or Fuel
Injection System professionally cleaned first and then switch over to
using such PA’s. Alternatively, start using the PA’s with
a full-tank and keep topping it up say every 15 lrs, so as avoid a high
concentration of such gums/glues in the fuel tank.
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