Technical Tappet Noise - Exactly How To Fix It? *UPDATED*

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Technical Tappet Noise - Exactly How To Fix It? *UPDATED*

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Tina The White Cinq
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Tappet Noise - Exactly How To Fix It?

My '94 Fiat Cinq 899cc is making that popular tapping tappet noise. My dad seems to think that that there is something blocking the oil? and I seem to think its the shims. So can anyone shed any light on this?

Cheers
 
Re: Tappet Noise - Exactly How To Fix It?

Ah I see, so how would I go about unblocking the blockage?

Cheers
 
Re: Tappet Noise - Exactly How To Fix It?

Also, I've recently changed the oil and oil filter

Cheers
 
Re: Tappet Noise - Exactly How To Fix It?

They are hydraulic but they are supposed to be preloaded. I removed them filled them with oil, set the preload and the noise stopped.

Rich.
 
Re: Tappet Noise - Exactly How To Fix It?

OK, here we go again.

The tappets sometimes clatter because they are gummed up with old oil or dirt from oil that hasn't been changed regularly enough.

This method is not guaranteed to work, but is cheaper than buying a pair of tappets far less than a full set. It also does not require the engine to be dismantled in any way.

Follow the method carefully, there are no short cuts.

1, Go and buy two oil filters and a gallon of diesel.

2, Run the engine until warm, switch it off.

3, Drain the oil and remove the filter.

4, Refit the drain plug, fit one of the new filters.

5, Put the diesel in the oil filler. Yup, thats right, fill the sump with diesel. No honest, thats exactly what I mean. Its a thin oil, do not panic.

6, Start the car, DO NOT USE THE ACCELERATOR AT ALL.

7, Run the car, you may increase the engine speed to a fast idle. No more than slightly above idle. About 10 - 15 minutes will do it.

8, Drain the diesel from the sump, have a look at how dirty it is. Diesel contains detergents. Remove the oil filter.

9, Let it all drip out, do not rush.

10, When its all out, refit the sump plug and fit your second filter.

11, Fil with good quality 10/40 or 15/40 oil.

12, Start and drive. If the tappets are quieter, all well and good. If not, then either live with the noise or replace them.

Cheers

D
 
Re: Tappet Noise - Exactly How To Fix It?

Ok thanks all, bit of a bummer because I just replaced the oil and oil filter last wednesday lol

Cheers
 
Re: Tappet Noise - Exactly How To Fix It?

Ok thanks all, bit of a bummer because I just replaced the oil and oil filter last wednesday lol

Cheers

If the oil is still clean, then save it after you have removed it, and only get one new filter. Leave the current new filter while you use the diesel, then add the new filter before putting the oil back in.

If your new oil is dirty, then you can see where the problems lie.

Cheers

D
 
Re: Tappet Noise - Exactly How To Fix It?

7, Run the car, you may increase the engine speed to a fast idle. No more than slightly above idle. About 10 - 15 minutes will do it.

What do you mean by this? I'm a total noob at this kind of stuff :(. Sorry all.

Cheers
 
Re: Tappet Noise - Exactly How To Fix It?

What do you mean by this? I'm a total noob at this kind of stuff :(. Sorry all.

Cheers

On an 899 you need to run the engine a little bit above idle, or the water pump won't pump enough to cool the car. gently press the throttle so the revs rise above idle, but not so much as you would use to pull away. Do not drive the car anywhere, do not put load onto the engine.

Cheers

D
 
Re: Tappet Noise - Exactly How To Fix It?

is there anything that could go particularly wrong with this meathod and damage your engine?? i'm just trying to weigh up the pros and cons...
cheers
 
Re: Tappet Noise - Exactly How To Fix It?

is there anything that could go particularly wrong with this meathod and damage your engine?? i'm just trying to weigh up the pros and cons...
cheers
Lets see... it's deisel. so maybe you could start to burn the deisel as its going to be under pressure... probably not too useful for your engine ?!
 
Re: Tappet Noise - Exactly How To Fix It?

But on the other hand it is a type of oil.

Cheers
 
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