tappy engine when warm

jahowi · Post by **jahowi** » Sat May 31, 2008 10:58 am

hi there ive just got a 1.4 8 valve 6n polo
and i have a problem when its warm the engine tapps
but when i first start it up in the morning its fine does any 1 have a idea what the problem is ???

888lewis888 · Post by **888lewis888** » Sat May 31, 2008 11:41 pm

i get the same problem, i got a 1.6 6n, but with mine it will come and go as it pleases (once its warm), i notice it more when waiting in traffic too.

so yeh any help to try and stop would be good

polo-sib · Post by **polo-sib** » Sun Jun 01, 2008 10:28 pm

Worn tappets or camshaft at a guess.

Easiest way to tell if tappets are defected is get a mechanic with a filler to check if the clearance is more than 0.2mm between the cam and tappet head (whilst the cylinder is upright position), if so then tappets are worn/deffected.

Rmachines · Post by **Rmachines** » Mon Jun 02, 2008 12:05 pm

Initaly i would say tappits but these engines make a light TICK noise and if it was worn on the surface, the temperature wouldnt effect it.

Piston slap is common on these engines, but thats usualy louder when cold and goes when warm, or at least quietens down. thats more of a rattly knock.

Cant really think what it would be other than something to do with the belts or aux components such as alternator bearings etc..

jahowi · Post by **jahowi** » Mon Jun 02, 2008 6:20 pm

its definatly cuming from the top end it sounds like a injector to wards the rear of the block
are they tappetrs on this engine or are they lifters ?
could the wrong oil be causing this as well
also ive been told to clean the oil pipe in the sump it has mesh on ??

Rmachines · Post by **Rmachines** » Mon Jun 02, 2008 11:09 pm

They are hydralic lifters, Four things will cause them to tap. Wear to the surface of the cam lobe, Wear to the lifter face, Blocked oil ways and lifter failure. All of which will cause a tapping **More so when cold** So ... im almost certain lifters wouldnt be the cause.

However.. Injectors do make a ticking noise, which can be very noise, especialy if the injectors are a little worn.

jahowi · Post by **jahowi** » Tue Jun 03, 2008 5:16 pm

baisiclly it sounds like a 1.1 ford fiesta the push rod 1 its really starting to cheese me off and its getting me down
how much are new injectors and where would i get them from is there any way of testing them ?

polo-sib · Post by **polo-sib** » Tue Jun 03, 2008 8:08 pm

jahowi wrote:baisiclly it sounds like a 1.1 ford fiesta the push rod 1 its really starting to cheese me off and its getting me down
how much are new injectors and where would i get them from is there any way of testing them ?

Injector valves are part number for
AEE, AHS: 032 906 031 A
For all other engines: 030 906 031 E

Not sure how you would test them, I'd do it the stupid way and run the starter with the sparks off and see if they squirt. But theres probably another better way like a multimeter.

Edit: Haynes says test the resistance, it should be 1.2 to 1.6 ohms at 15c-30c