Tuesday 21 August 2012

Valve clearance check

Since the Toyota VVT-i engines are prone in valve seat recession when running on LPG, I decided to take a reading of the valve clearance (even after being told that this would not be a problem by the guys at Front Fuels).
This is the valve clearance readings that I got:

Intake valves: 0.15-0.25mm, reading was 0.20mm
Exhaust valves: 0.25-0.35mm, reading was 0.30mm

The engine had been stopped for some time but it was not "completely" cold, so the values could be somewhat bigger than expect at cold engine temperatures.
This reading was taken at 131357km (2500km on LPG)

Saturday 11 August 2012

Service of the LPG system

The only service required to a liquid injection system is made after the 1500km mark.
This service consists in various leakage checks and the correct functioning of the LPG ECU and fuel tank pump.
Since nothing was deemed wrong, the Corolla got up and running with only one single remark. It doesn't automatically switch to petrol when the LPG thank goes dry.
This should be solved with a ECU software update from Vialle itself... so we wait.