The Sudden noise in the engine compartment at idle and their disappearance after the increase in revs indicated increased thermal clearance between the tappets and the timing of the engine valves. It happens every 30-40 thousand kilometers. But this trouble is completely solved. In this article we will explain how you can adjust valve clearance (VAZ-2108 is to be considered as an example) with his own hands.
It Should be noted that the drive system of engine valves “eight” is significantly different from the drive "classics" (VAZ 2105-2107). So the first time you may experience some difficulties. On older models «Lada» for issuing clearances need to twist the bolt and locking it with a locknut. On “eight” completely different order of adjustment valve. VAZ 2108 does not have such a system – here are exposed the gaps with shims of different thickness. This is the main feature of all front-VAZ “eighth” family.
Knowing these features of the work, you can begin to practice. First we need to remove the valve cover and hoses. Next, with the engine out all the candles, drained the oil. So we're going to see more goals. Then poddomkratit the front of the car and scroll the front wheel. So we put all the marks on the crankshaft pulley and cover label. The latter is located on the rear cover of the timing belt. The inspection window on the transmission check, aligned on the flywheel mark with a V-neck on the block.
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To make it easier to divide the pulley shaft into 4 pieces, cut out of cardboard a small square (8x8 cm). If you make it to the end of the pinion pointing at one corner on a full-time factory label, all others will indicate the position when adjusting. It 90, 180 and 270 degrees. As next is adjusting the valves? VAZ 2108 remains in poddomkratit condition, and in that time we cranked clockwise the camshaft on two or three teeth.
After all these operations, you can proceed to set the valve clearances. You need to make all the measurements and figure out which parts need adjustment. With a special feeler gauge measure the clearance in the first and third valves. This tool is installed between the adjusting washer and the camshaft lobe. These data compare with tabulated values:
If the clearance between the adjusting washer and the camshaft lobe does not correspond to norm, means, the valve need to be adjusted. Retrieve the washer from the seats and record their thickness in a notebook. Next, we need a means (device), utaplivayutsya tappets. We installed on the fixing pin of the cover and pull the pushrod so that the slot looked at us. In parallel, the need to record and numbered all the valves, and washers that were installed.
As a further adjustment is made valve VAZ-2108? Everything is simple. The valve is recessed down, and we fasten with a clip. It can be taken from the kit to adjust the valves. Using a screwdriver or tweezers, push the washer, and measure its parameters with a micrometer. So we will make more precise adjustment.
On the same principle it is necessary to measure all the valves, remove them, measure and record in a notebook of numbered goals. After all these manipulations, we expect the size of the washer. This can be done according to the following formula. First, subtract the measured clearance from the table value, then we add to this number the thickness of the removed washer. In the end, we get the thickness of the new parts
This formula will calculate and record all necessary clearances, then go to the store, buy and install a new washer. After that, produce a trial run of the engine, waiting until it warmed up to 85 degrees Celsius, then wait until it cools down, and re-measured the clearances. Some of them may stray – in this case, adjust it again. Remember to set the clearances is required only on the cooled engine.
This can be considered a closed question “how to properly connect the valves”. VAZ-2108 – a very simple car to maintain, so even a time-consuming process will not cause any problems. In this service you will spend minimal amount of money.
So we figured out how to connect the valves VAZ-2108 with his own hands. By the time the entire procedure will take about two to three hours of free time.
Article in other languages:
AR: https://tostpost.com/ar/cars/20040-vaz-2108.html
DE: https://tostpost.com/de/autos/37351-wie-erfolgt-ventilspiel-vaz-2108-mit-ihren-h-nden.html
HI: https://tostpost.com/hi/cars/21728-2108.html
JA: https://tostpost.com/ja/cars/19659-vaz-2108.html
KK: https://tostpost.com/kk/avtomobil-der/38089-alay-retteu-klapandaryny-vaz-2108-z-oldarymen.html
TR: https://tostpost.com/tr/arabalar/34588-nas-l-yap-l-r-subap-ayar-vaz-2108-kendi-elleriyle.html
Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."
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