1.9 Isa (rosa, for cvvt)

F requency : 250Hz

Coil resistance :

Opening coil : 11.9 ± 0.8Ω

Closing coil : 15.4 ± 0.8Ω

Vendor : Kefico

* Advantages compare with current ISA

- Max. air flow : 63~71m³/h at 96% duty

(Current ISA : 50m³/h at 96% duty)

- Increased durability

- Decreased weight (10%)

Location Comparison between New (ROSA) & Current (EWD3-2)

2. Delta Engine (2.7L)

2.1 Overview

2.7L Engine room

2.7 Delta Engine

2. Timing belt and chain

Installation procedure for timing chain

1. Align the camshaft timing chain with the intake timing chain sprocket and exhaust timing chain sprocket as above.

2. Install the camshaft and the bearing caps.

Installation procedure for timing belt

1. Install the camshaft sprockets and align the timing marks.

[ NOTE]

1. When installing the camshaft sprockets, fasten

them tightly while holding the hexagonal part of the

camshaft

2. Before installing the timing belt, if the timing marks

of the cam sprocket and the cylinder head cover do not coincide, do not rotate the cam sprocket more than 3 teeth in either direction.

3. Rotating the sprocket more than 3 teeth may allow the valve and piston to touch each other.

4. If the cam sprocket is rotated more than 3 teeth unavoidably, rotate the crankshaft counter -clock wise a bit before rotating the cam sprocket.

2 . Install the auto tensioner to the front case..

[NOTE]

At this time auto tensioner's set pin should be

compressed and secured with set pin.

3. Align the timing marks of each sprocket and install the timing belt in the following order. Crankshaft sprocket → Idler pulley → camshaft sprocket (LH side) → Water pump pulley → camshaft sprocket (RH side) → Tensioner pulley.

[NOTE]

1. In this step, No. 1 cylinder is in the tdc (Compression stroke).

2. Be very careful if you use your fingers

4 . Pull out the set pin of the auto tensioner

H ow to adjust the tension of the timing belt

1. Rotate the crankshaft 2 turns clockwise and measure the projected length of the auto tensioner at TDC (# 1 Compression stroke) after 5 minutes.

2. The projected length should be 6 ~ 8 mm.

3. Verify that the timing marks of each sprocket are in their specified position.

[NOTE]

If the timing marks are not in their specified position, repeat from 6 above.

2.3 Cylinder head

Cylinder head

HLA (Hydraulic Lash Adjuster)

HLA adjusts valve clearance as zero clearance automatically.

With the HLA filled with engine oil, hold A and B by hand.

If it is compressed smoothly, replace the HLA.

For more detail troubleshooting, refer to the below.

Problem	Possible cause	Action
Temporary noisy on starting a cold engine	Normal	This noise will disappear after the oil in the engine has reached normal pressure.
Continuous noise when engine is running after sitting more than 48 hours.	Oil leakage of the high pressure chamber on HLA, allowing air to get in.	Noise will disappear within 15 minutes when engine runs at 2000~3000 rpm If it doesn’t disappear, refer to item 7 below
Continuous noise when engine is first started after rebuilding cylinder head.	Insufficient oil in cylinder head oil gallery.
Continuous noise when engine is running after excessive cranking.	Oil drain out of the high-pressure chamber in HLA, allowing air to get in. Insufficient oil in HLA
Continuous noise when engine is running after changing HLA		CAUTION Do not run engine at a speed higher than 3000rpm as this may damage HLA.
Continuous noise during idle after high speed running.	Engine oil level too high or too low.	Check oil level. Drain or add oil as necessary.
	Excessive amount of air in the oil at high engine speed.	Check oil supply system
	Deteriorated oil	Check oil quality. If deteriorated, replace with specified type and amount of oil.
Noise continuous for more than 15 minutes.	Low oil pressure	Check oil pressure and oil supply system of each part of engine.
	Faulty HLA	Remove the cylinder head cover and press down on the HLA by hand. If it moves, replace HLA. CAUTION Be careful of hot HLA.