IÆve been having problems with lash adjuster tick/tap.

The truck was stood for 3 months, but is now back on the road, but I have a tick/tap. On cold start there is the usual (for my truck) tick which goes away very quickly. After about 2 minÆs it comes back, then gets louder, sounds like a bag of loose spanners.
I got a local shop to change oil & filter (genÆ Mitsu), & check oil pressure,
Pressure results, mid 20Æs psi @ 1000rpm & mid 40Æs psi @ 3000.
I did ask for pressure readings @ 1000, 1500, 2000, 2500, 3000 & 3500 but I only got the 2 above.

Shop foreman said I need to replace the lash adjusters in both heads and has quoted ú385 ($750) to do the job.

IÆve tried revving the engine to 3000rpm/idle..repeat..repeat as per the Mitsu manual a number of times, I lost count, sounded like the tick had gone. Drove around the block & it was back. I will try a lifter flush oil additive tonight & see how that goes.

Questions:
Could the problem be elsewhere? Difficult to say I know butààààààoffers

Is replacing the VLAÆs a job for a novice, like me? Yes another difficult one.


I have a Haynes manual + others from the net etc & it looks not too bad. Is the tool to hold the VLAÆs in place while removing the rocker assembly essential? One lost VLA down an oil passage & IÆm toast, along with the engine.

Not hard, just tedious. You have to do the same steps as a timing belt renew, plus pull the rocker arms off the heads, then just soak the new ones in diesel fuel overnight, "pumping" the plunger first while submerged, and put it back together. Heads do not have to come off, but I'd retorqued them while I was all the way in there.

I can't vouch for this stuff but I thought I'd give it a try...





Just another thought BG MOA

Just take the air plenum off and valve covers off and unbolt the rockers. No need to take the timing belt stuff off. Not to bad of a job.

Sparkem
That was the impression I got from reading the manuals, but the idea of getting in as deep as a timing belt change bothers me. <img src="/forums/images/graemlins/scared.gif" alt="" />

SteveN