[AntonyMullen]

Hi all

Have got my 2006 Hyundai Tuscon 2.0l 4cyl booked in for a timing belt change (original belt as far as I know so I figured its high time it was done).

Not cheap, but I figure I saved enough doing everything else on the car myself to get a mechanic to do it (especially since its an interference engine)

I figured whilst its off, the serpentine belts should be replaced and I figured the valve lash should be adjusted (the manual specs 100k valve lash interval). From what I have heard, the timing belt has to come off and the cam needs to come out and shims need adding to adjust the ‘bucket tappets’.

Sadly, not like the old days when you could do it in half an hour with 2 ring spanners, a flat blade screwdriver and a set of feeler gauges.

I asked the mechanic (who comes highly recommended from several friends) how much it would cost to do the valves at the same time – he said they have non adjustable hydraulic tappets – and one is probably sticking.

I am no stranger to hydraulic lifters, but I just can’t understand it.

I know the engine went from 68-92k with only 1 or 2 oil changes immediately before I bought it, but it doesn’t have the symptoms of a stuck hydraulic lifter. It only ticks slightly cold, for 20 seconds on warm restarts and occasionally on the overrun if not fully warmed. Stuck lifters tend to tick nearly constantly or if the oil has bled out sitting


So I rang 4 other Hyundai dealers and got answers ranging from “The guys are fairly sure they have hydraulic lifters” to a nice older guy practically guaranteeing it does have hydraulics and strongly suggesting I go get a bottle nulon lifter free up and not wasting money to get it pulled down unless it really needs it (which I thought was honest)

Everything online points to solid tappets – so I now have no idea.

Does anyone have a G4GC in a Tuscon, Tiburon or Elantra and know for sure?

Thanks

[KetyElly]

According to what I can find on that engine it uses DOHV camshaft setup and they use valve adjusting shims either over the bucket or under the bucket design. It may may be that shims are either worn or the valves are worn and thicker shims are needed.

Now take this a grain of salt as I have repaired a DOHV engine valve train yet.

DOHV = Dual Over Head Valve (other words two camsshaft with one for intake valve and the other for the exhaust valves)

[Kreatonus]

From what I’ve learned, the G4GC engines usually have solid lifters with shims, so it’s not uncommon to get a bit of that ticking sound as they get older. I did some research when I had mine and found that regular oil changes help keep things smoother, even if the noise doesn’t fully go away.

If you’re thinking about keeping the car long-term, it’s good to know there are reconditioned Hyundai Tucson engine options out there with a bit of a warranty.