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460 GLE valve adjustment

Discussion and advice for 440, 460, 480 owners.

1986 - 1997 440
1986 - 1997 460
1986 - 1997 480

enferm82
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460 GLE valve adjustment

Post by enferm82 » Mon Mar 02, 2020 9:30 am

110,000 Km, 1993 Volvo 460 GLE automatic that never has had valves adjusted.

Symptoms: When the A/C is turned on, the revs come down and engine is shaky while being in "D", if put in N or P it gets better.

Work done: Car has had plugs, leads, coil, rotor arm and distributor cap replaced little ago, before experiencing this problem.

After I noticed this vibration, I took the throttle body and idle valve so they can be cleaned; they weren´t bad, but still performed the work. Nothing changed.

As the car has never had the valves checked and I´m experiencing a little of uneven idle, without the A/C on; I figured I should check the valve clearance, as the Haynes Manual states it should be checked at 80,000Km.

I have feeler gauges and think that I can accomplish to measure the valve clearance, but I am unsure on how to get the shims out in case I need. Should I do one valve at a time? when the lobe is facing away from the shim. How can I get the shim out if I do not have the Volvo special tool? Haynes Manual has a picture using a big screwdriver to make it go down.

Finally, where can I get shims for this model? Local Volvo doesn´t carry them

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93Regina
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Re: 460 GLE valve adjustment

Post by 93Regina » Mon Mar 02, 2020 10:11 pm

enferm82 wrote:
Mon Mar 02, 2020 9:30 am
1993 Volvo 460 GLE automatic that never has had valves adjusted.

Car has had plugs, leads, coil, rotor arm and distributor cap replaced little ago, before experiencing this problem.

Finally, where can I get shims for this model?
1. OEM replacement plug wires, plugs, rotor, and cap used? Specifically, what type of plug wires were used?

2. Local Volvo dealer should list them....They may be called an "Adjusting Washer" or a "Valve Shim"

3. Yes carefully measure clearance, but, I suspect a micrometer will also be needed. Report back your findings. I would not remove them, at this time.

enferm82
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Re: 460 GLE valve adjustment

Post by enferm82 » Thu Mar 05, 2020 10:15 am

1) OEM replacement: plugs, rotor, and cap, 15,000Km ago. Plug wires and coil (Bremi Brand) specific for the car, less than 2,000Km ago.

2) Volvo dealer has changed, I am trying to find alternatives to where to source them. Will try Renault sellers, as the engine came from them, maybe I am wrong but think it was Renault 19. In case I am unlucky, will let you know.

3) Measured clearance yesterday. On the intake, the spec is 0.20mm, the feeler gauge went in easy, but a 0.28mm didn´t. On the exhaust, the spec is 0.40mm, the feeler gauge went easy, the 0.45mm went in well snug, 0.50 didn´t go through. The feeler gauge I have was bought from Mercedes store, will get another one to get the exact measurements to continue (more blades). In any case, seems that the valves will need adjustment and could be the culprit. Interesting to find that on all 4 cylinders the measurements were the same. So it seems I will need to get the special tool to take shims out and a micrometer to measure them. Plugs were very nice and clean, adjusted the electrode to 0.7mm as per specified.

Interesting that #1 cylinder is near to the tranny and not towards the timing belt. Read about it, and confirmed it on the camshaft. See photo.
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WhatsApp Image 2020-03-05 at 8.28.42 AM.jpeg

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93Regina
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Re: 460 GLE valve adjustment

Post by 93Regina » Fri Mar 06, 2020 7:13 am

enferm82 wrote:
Thu Mar 05, 2020 10:15 am
3) Measured clearance yesterday.
On Redblock engines, discs are available in increments of 0.001 inch (0.05mm).

>seems that the valves will need adjustment

Not on a Redblock engine....valves being a pinch loose is not an issue.


I've never tried Volvo's site: Volvo Cars Special Tools
https://volvocarstools.volvocars.biz/

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93Regina
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Re: 460 GLE valve adjustment

Post by 93Regina » Fri Mar 06, 2020 8:52 am

enferm82 wrote:
Thu Mar 05, 2020 10:15 am
Renault 19
From 1992, the engines offered were substantially different, with the range now including 1.6i (84 bhp (63 kW; 85 PS)), 1.8i (89 bhp (66 kW; 90 PS)), and 2.0i (110 bhp (82 kW; 112 PS)) naturally aspirated petrol engines.... The 1.6 was equipped with multi point fuel injection; the 1.8 engine had single point injection, and the 2.0 came with a choice of single point and multi point injection units,

I've never seen this engine, but I assume it has an IAC (Idle Air Control), which controls idle RPM. Your issue seems to be the RPM is dropping below ECU's set point. So, if air filter is good, then not enough air is passing thru IAC's port to intake manifold would be a logical reason...if everything else is fit for duty.

enferm82
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Re: 460 GLE valve adjustment

Post by enferm82 » Fri Mar 13, 2020 8:53 am

I did recheck the valve clearance, according the the Haynes Manual they are still within the tolerance: 0.15-0.25mm and 0.35-0.45mm. But will start to get the specific tool to perform the adjustment soon.

This is the 1721cc engine, B18EP, multipoint fuel injection. It indeed has an IAC valve, that I cleaned but will do further tests on it. The rpms at idle without the A/C on, are oscillating a little bit regardless it is in P,N or D. The air filter was changed last year (less that 5,000Km) with a Pippercross high flow that sits inside the original air-box.

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