nak nak noise from engine, please help

[sehzata]

hello everybody,

i've a 91 model 4200 carby with LPG patrol

After I got my car from under the hood at idle and the sound came nak nak

sound speed increases with increasing rpm, like nak nak nak nak nak?

not like the sound of the valve, oil dipstick is normal and no heat.

Propeller?

belts? or what?

if I can t find the problem, i ll add video here.

[NissanGQ4.2]

tappets need adjusting??? I'm sure one of the more mechanically minded members will be able 2 help you out

[Finly Owner]

Bent push rod maybe, but should be missing badly

[patch697]

Nak Nak nak??? I can tell you have tried hard to explain your problem but Im tipping in order to help you (if we can) we will need some more information. ie:

* Is it faint or loud

* Are you able to tell as on what side of the engine do you think it maybe coming from & top or bottom, front or back will help also.

* Does it get louder or softer as you bring the revs up or is there no change in the noise at all.

*does it change in or out of gear, or with the clutch in or out (IF you have a manual trans)

We will do our best to assist you but the more information you can provide the more we may be able to help.

[NissanGQ4.2]

maybe be your traveling too close behind Plassy and your really hearing a Clack clack clack noise *LMAO*

[sehzata]

Nak Nak nak??? I can tell you have tried hard to explain your problem but Im tipping in order to help you (if we can) we will need some more information. ie:

* Is it faint or loud

loud i can hear from the inside (idling) (

* Are you able to tell as on what side of the engine do you think it maybe coming from & top or bottom, front or back will help also.

front cooling fan and engine or engine top

* Does it get louder or softer as you bring the revs up or is there no change in the noise at all.
it get softer but accelerate as i bring the revs up

*does it change in or out of gear, or with the clutch in or out (IF you have a manual trans)
i have manual transmission and not related to the transmission and clutch
We will do our best to assist you but the more information you can provide the more we may be able to help.

*sounds like knoc knock, 2 or 3 times per second (idling)

i hope to describe

[Finly Owner]

I still lean towards push rod bent.

[sehzata]

I still lean towards push rod bent.

may be you are right, i ll go mechanic on saturday

[sehzata]

i uploaded photo

[sehzata]

Bent push rod maybe, but should be missing badly

sorry i forgot to ask, where is the ''bent push road' in engine?