What are the valve clearances for the 3F-E engine per the emissions label?

Intake 0.008 in. (0.20 mm) and exhaust 0.014 in. (0.35 mm).

What is the dash pot setting speed?

1200 RPM with the ISC connector disconnected and the vent hole of the dash pot plugged (see repair manual for additional information).

Can the idle mixture be adjusted?

No — the idle mixture screw is preset and sealed at the factory, and adjustment during tune-up is not recommended.

What emission systems does this engine use?

EFI, AI (air injection), EGR, O2S (oxygen sensor), and TWC (three-way catalyst); engine family JTY4.0T5FBB3, evaporative family EV-ME, 241.3 CID.

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1988 Toyota Land Cruiser 3F-E Emission Control Label - Tune-Up Specs & Timing

Toyota Vehicle Emission Control Information label, 3F-E FED catalyst, 1988 light-duty truck

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Toyota Vehicle Emission Control Information plate listing engine family, tune-up specs, and EPA compliance for a 1988 3F-E catalyst truck.

AI caption August 2017 · Photo 3 of 35

This document is a photograph of the factory Vehicle Emission Control Information label affixed under the hood of a 1988 Toyota Land Cruiser with the 3F-E engine (241.3 CID). Issued by Toyota Motor Corporation, the label identifies the engine family as JTY4.0T5FBB3 and evaporative family EV-ME, with emission control systems EFI/AI/EGR/O2S/TWC (electronic fuel injection, air injection, EGR, oxygen sensor, three-way catalyst). It provides engine tune-up specifications for all altitudes, to be performed at normal operating temperature with the air cleaner installed, accessories off, and transmission in neutral: ignition timing of 7° BTDC with the check connector short-circuited at idle (a connector pin diagram is shown), dash pot setting speed of 1200 RPM with the ISC connector disconnected and the dash pot vent hole plugged, valve clearances of 0.008 in. (0.20 mm) intake and 0.014 in. (0.35 mm) exhaust, a factory-preset and sealed idle mixture screw, and automatically controlled idle/fast idle speeds. The label certifies conformance with U.S. EPA regulations for 1988 model year light-duty trucks and shows codes 61040, 3F-E, FED, CATALYST, N6.

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Frequently asked questions

What is the ignition timing spec for the 1988 Toyota Land Cruiser 3F-E?: 7° BTDC with the check connector short-circuited at idling.
What are the valve clearances for the 3F-E engine per the emissions label?: Intake 0.008 in. (0.20 mm) and exhaust 0.014 in. (0.35 mm).
What is the dash pot setting speed?: 1200 RPM with the ISC connector disconnected and the vent hole of the dash pot plugged (see repair manual for additional information).
Can the idle mixture be adjusted?: No — the idle mixture screw is preset and sealed at the factory, and adjustment during tune-up is not recommended.
What emission systems does this engine use?: EFI, AI (air injection), EGR, O2S (oxygen sensor), and TWC (three-way catalyst); engine family JTY4.0T5FBB3, evaporative family EV-ME, 241.3 CID.