Engine noise and engine mount

**110Landy86** · 7th October 2014, 09:23 PM

Any advice on changing out the drivers side engine mount. It is in a shocking position in particular the bolts. Are there any parts that need removing to allow better access?

Also on an unrelated topic- I have noticed my engine gradually becoming louder with time (like a rattly can/ tinny noise). I recently adjusted the valves but little improvement - also only one or two required adjustment. The engine has bulk grunt and definitely not down on power and has normal oil consumption.

I can't remember the last time the timing was ever done. Whenever I ask my mechanic about checking the timing he says the engine timing on 4bd1 rarely needs to be adjust and hence it never happens. Question is, is the noisiness likely to be attributed to the timing or do I need to replace valve springs or what???

**110Landy86** · 7th October 2014, 10:05 PM

Abundant/ excessive Diesel clatter. This sums it up perfectly

**isuzutoo-eh** · 8th October 2014, 07:45 AM

Your soundproofing (if any!) hasn't deteriorated or fallen off has it?

**rar110** · 8th October 2014, 08:16 AM

If you are in Brisbane Archies Motors at Rocklea has a long history with Isuzu trucks and is excellent with older Isuzu engines.

**110Landy86** · 8th October 2014, 06:52 PM

Haha that's always a possibility. Though I have been soundproofing the vehicle for a while now. I think I've applied dynamat and overlay products to every accessible surface.

Today I had my car parked up alongside my mates - both 4bd1s of the same era. Mine was noticeable louder. Hopefully it's something trivial!

**steveG** · 9th October 2014, 04:17 PM

I assume if you're convinced its engine there's no change to the noise when you depress the clutch pedal (ie definitely not gearbox clatter)?

Only asking as it would be hard to compare both vehicles unless you were outside - which implies neutral with the clutch engaged so the clatter could be coming from the gearbox.

Steve

**110Landy86** · 10th October 2014, 08:06 PM

Hi Steve yeah there definitely is gearbox clatter (which has somewhat reduced since installing a brand new harmonic balancer) but no this clatter sounds to be emanating from either top/ drivers side. I have constant air in the system (that could be contributing), which when I tried to bleed out, noticed that the primer pump is buggered. I now have the truck scheduled in for a full diagnostic/ fuel system service at a local diesel injection specialist.

I don't know if the fuel system needs, or certain associated components, need adjustment from time to time but I can guarantee that it hasn't had any attention for at least 20 years.

**steveG** · 10th October 2014, 08:50 PM

I'd be interested to know what a "full diagnostic" on a 4bd1 consists of.
Pretty sure mine hasn't had anything other than a new priming pump and usual fuel filters since it was built in '81.

Steve

**JDNSW** · 10th October 2014, 09:22 PM

Engine noise at idling is very dependent on slight changes in idling speed, so if this has changed, it could explain the increase. Also, look for a bit of bodywork that is vibrating in sympathy - I note for example that at present I have another rivet broken on the bonnet - must replace that.

John

**steveG** · 11th October 2014, 02:10 PM

Originally Posted by JDNSW

Engine noise at idling is very dependent on slight changes in idling speed, so if this has changed, it could explain the increase. Also, look for a bit of bodywork that is vibrating in sympathy - I note for example that at present I have another rivet broken on the bonnet - must replace that.

John

Check the air filter housing and brackets too. I'd reckon its the right sort of construction to create a nice clattery sound at idle if one of the mounts was broken/loose.

If the RH engine mount is buggered, I'd be changing that first before spending too much energy on troubleshooting. If the mount is allowing more movement than usual there could be a whole lot of weird things going on in sympathy.

Steve

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