Hi how can i convert my 1976 4.2 damlier jagaur coupe from leaded fuel to unleaded fuel

Leaded petrol or unleaded Check here


According to the link.. before 1990 Toyota needed lead fuel ..

Dude you don't say what car so
1900 to 1904 Kerosene

1904 to1976 Leaded gas

1976 to present Unleaded gas

Mike

All Porsche petrol engines have been unleaded since 1990

Low fuel pressure or a misfire.

It is best to run this engine on unleaded petrol. A high grade unleaded will give you extra performance and cause no damage. Leaded fuel was designed for cars made in the 60's to 80's that had used softer materials in their cylinder heads, leaded fuel pro-longed cylinder head life and reduced pre-ignition. Unleaded fuels are a cleaner, safer fuel to use.

Unleaded is recommended for this car but it is compatible with LRP since it has no catalytic converter.
I am asuming you are in South Africa? Have a look at the NAAMSA fuel compatibility database.

None. Yes I said it right, None. Belive it or not in 1976 trucks were not required converters, air pumps and could run on leaded or unleaded gas. Man I've been doing this too long and I'm getting old.

the engine already has been engeenered for unleaded fuel

Hi,

Am afraid nothing much you can do since you have to make do with what is locally available. However, a couple of things you can keep in mind:
1. Using leaded fuel with a car intended to use unleaded fuel would destroy your car's catalytic converter faster than normal wear and tear;
2. At times unleaded would be available, pls use as much as possible to help clean/remove the lead additive, tetraethyllead that will cover some soft engine parts with the lead-containing material;
3. you may have to tune your engine's timing to compensate for the leaded fuel.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

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