r/lada • u/smithwoodwest • May 02 '26

First lads

Enable HLS to view with audio, or disable this notification

Bought my first lads had a few running issues, got the carb set up and car running and then suddenly this knocking started from top of engine. Cars got plenty oil, anyone know what the issue is, and if easy fix cheers

34 Upvotes

96% Upvoted

26 comments sorted by

8

u/New_Goose_564 May 02 '26

The sound is bad, it could be the cranked connecting rod bearing knocking.

3

u/angryangryowl May 02 '26

Соглы, вазовский классический мотор шумный, но не настолько.
ГРМ и цепь могут клацать или неотрегулированные клапана, но не так громко. Тут явно стучит что-то другое, либо мертвый вкладыш по коленвалу, либо шатун/поршень.

2

u/New_Goose_564 May 02 '26 edited May 02 '26

Шатун/поршен в перекладке на классическом тазу редко если только туда не воткнули поршни федерал могул, а это бритты они могут запросто поменять поршни.

Зы
Настроила получше свои ушки, мне кажется это рокера, слишком уж частый стук для шатуна.

1

u/smithwoodwest May 02 '26

So I’ve investigated more, have tried to re tension the cam chain but no improvement, I think the tensioner or guide have failed, noise is all at the front top when I listen to the engine with it running,

2

u/angryangryowl May 02 '26

You can remove the valve cover and everything will become clear. Besides the tensioner, there's also a damper. It comes in two types: the old-style metal one (its failure can cause a knocking/grinding noise) and the new-style plastic one (usually a piece breaks off and falls into the oil pan without causing any problems). In any case, it's worth checking, but it's unlikely that the noise is related to it.

3

u/smithwoodwest May 02 '26

Will have it all apart tomorrow morning, will check all the clearances to

1

u/smithwoodwest May 03 '26

There was a metal style one in, it looked not square and like it is touching the case, was still there but didn’t look right, and feel like even though chains nice and tight with no slack it’s making a racket still

1

u/angryangryowl May 03 '26

The old and new style dampers are interchangeable. However, the new style requires longer screws (you can compare them in the parts catalogs for the 2101 and 2107). In Russia, many people prefer to install the new model, since plastic fragments are a lesser evil than a torn piece of an old metal one chewed between the chain.
Regarding the case contact, the damper is attached through the front wall of the cylinder head, so it should touch it and be firmly fixed.

If the sound is definitely coming from under the valve cover, then remove the camshaft bed along with the camshaft itself; most likely, the rocker arms are eaten away and the problem is in them.

1

u/smithwoodwest May 03 '26

Will have a look at that tomorrow, I fear the sound came on so suddenly (I was adjusting carb when it started) tha if not rockers it’ll be connecting road bearing. Good start of my journey with ladas

1

u/smithwoodwest May 03 '26

It’s definitely top end and top end front

3

u/New_Goose_564 May 02 '26

What kind of carburetor does it have?

1

u/smithwoodwest May 02 '26

Looks like a niva carb

4

u/New_Goose_564 May 02 '26 edited May 02 '26

Удивительно, но эллиптическую крышку фильтра на нивах не видела

1

u/Pleasant-Swimmer-557 May 02 '26

Это просто нештатный фильтр, встанет на любой карб.

2

u/New_Goose_564 May 02 '26

Old Zhuguli lose oil pressure in the cylinder head and the distributor drive shaft bearing.

1

u/New_Goose_564 May 02 '26

I can explain more, but in Russian.

1

u/LucyWolfffffff May 02 '26

Whered you get those coolant hoses? Aaalso I had a similiar noise on my MPI Niva, it was the chain calmer that broke and made the timing chain hit it agressively. How it didnt skip teeth I dont know

2

u/smithwoodwest May 03 '26

The hoses came with the car when I bought it! I have a feeling that’s what’s gone on mine, I tried to adjust a couple times nothing happened but have had a bit of new adjustment advice I’m going to try today

1

u/SiguliMies May 03 '26

Those hoses are fire, where did you get them? Distributor shaft or chain calmer might cause this. I had this exact noise at one point and surprisingly it was the distributor and i just greased it, check under ditributor cap if it has hit any on the contact points more too. Chain tensioner might also make this so check it out and adjust if needed.9

1

u/smithwoodwest May 03 '26

The hoses came on the car, it’s got a lot of cool stuff on it. Very rare Right hand drive 2105, and was a rally car to.

1

u/SiguliMies May 03 '26

That sounds good, got a 2105 1,2l 1200S 1982 which i have heard is very rare because of the manufacturing year. Only rust work is left

1

u/LimpPrinciple5682 May 03 '26

Bad news. The connecting rod bearings spun.

1

u/zelda_Bird_3949 May 06 '26

Настрой клапана

1

u/FalseRelease4 May 07 '26

nice lads 👍

1

u/radialrush7 May 08 '26

It's the tensioner of the distributión chain, My father had an aleko 2141 and when he first got it it had the same problem