Thread: Failing to reach 3000rpm

Check that with the accelerator pedal pushed all the way to the floor that the lever on the pump is up against the throttle stop, otherwise adjust accordingly, Regards Frank.

In addition to above.

Air restriction - usual intercooler hose collapsing etc

Sticking valve in head - edit already mentioned in other thread

It should be able to rev to limit without turbo signal to IP. That could be leaking but it is not the main issue here.

You mentioned different alternator pulley daimeter in your other thread, the size difference is small - doubt it is enough to be 1500 rpm out. You would probably have noticed this earlier anyway, if you changed it a while ago

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How old is the exhaust? It could be restricted limiting your revs. Disconnect before the first muffler and try revving.

Originally Posted by SSmith

In addition to above.

Air restriction - usual intercooler hose collapsing etc

Sticking valve in head - edit already mentioned in other thread

It should be able to rev to limit without turbo signal to IP. That could be leaking but it is not the main issue here.

You mentioned different alternator pulley daimeter in your other thread, the size difference is small - doubt it is enough to be 1500 rpm out. You would probably have noticed this earlier anyway, if you changed it a while ago

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well the silicone hoses i put on are kinda easy to squash. i always thought so when i bought them, seems to be as if any vacuum would squeeze them. hard to see what's happening under the bonnet when under boost though. i'll see if i still have my old ones and do a quick test. otherwise may have to see if wreckers has cheap one or better still can lend me one quickly.

how would i check for sticking valve? when i was doing valve clearance the furthest rear rocker was not aligned properly on the push rod and the house guest kept trying to rotate the engine, i yelled at him to stop as i could see he was trying to force it and the push rod slipped from under the rocker. i have been a bit scared of this since. i checked for damage. all seemed good. the seat in the engine looked fine. the push rod sits fine and is straight. the rocker arm seemed ok. i cranked engine over a few times by hand and everything seemed to move the correct way. a bit scared though that this might be issue to come.

the exhaust is less than a year old from the turbo back. have only a centre muffler (hi-flo) and no rear. 2 3/4 inch all the way.

i will check the pedal and throttle stop when im home today but would have thought that this wouldnt make the engine sound like its at full revs and rather just not let it rev out.

Hopefully dave wil be over to this thread to touch on the valve - me exp is very limited there.

Swap out the hoses if you have spares. Also check pre turbo - collapsed filter etc.

While it is off reach (a very clean finger) in the inlet side and give the turbo a spin.

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70kmh in fourth gear at 2000rpm. That's adjusted for the tyres.

Originally Posted by Fausto79

70kmh in fourth gear at 2000rpm. That's adjusted for the tyres.

Sounds about right. Even if RPM were out, the ticking is still of concern.

Toss a coin, heads - fuel, tails - air and work your way from start to finish of each system looking for blockages..... Actually start wherever the ticking sounds like it is coming from. Fuel sedimenter, fuel filter, fuel line blockage, lift pump are all common issues.

If it sat stagnant for an extended period while you did the head id be straight into the sedimenter.

Originally Posted by Fausto79

70kmh in fourth gear at 2000rpm. That's adjusted for the tyres.

Pretty sure i'm doing 80kph indicated at 2000rpm, actual about 83kph.