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Strange Engine Sound...
Posted: Fri Mar 16, 2007 12:35 pm
by Boags
Hi guys,
I've developed a strange whistle coming from the intake somewhere.
It starts from about 2000rpm and gets louder the further down my right foot is. I'm guessing it's got something to do with vacuum, any ideas?
I'll post some pics of where it is coming from later on.
Boags
Posted: Fri Mar 16, 2007 2:10 pm
by Juffa
A leak in the intake will usually show up as rough idle....are you getting that?
Did someone install a SC while you weren't looking.
J
Re:
Posted: Fri Mar 16, 2007 2:20 pm
by Boags
Juffa wrote:Did someone install a SC while you weren't looking.
No rough idle, and no SC...
Boags
Posted: Fri Mar 16, 2007 3:17 pm
by Boags
Could an exhaust blockage cause a whistle?
Posted: Fri Mar 16, 2007 3:21 pm
by bruce
short nose crank ?
Re:
Posted: Fri Mar 16, 2007 4:06 pm
by Boags
bruce wrote:short nose crank ?
Before anyone asks, yes, the car has half a tank of fuel...
Posted: Fri Mar 16, 2007 4:27 pm
by adamjp
One of the hoses on top of the inlet manifold that bleeds vaccuum off to help the engine. Possible crack or simply come 'off' the spigot it shoud be on.
If you can hear it whilst driving I suggest brake booster or heater control unit (are these vaccuum operated on an MX5?).
Posted: Fri Mar 16, 2007 5:33 pm
by GP
Last time I had a loud whistle from an engine it was a burnt exhaust valve.
Posted: Fri Mar 16, 2007 5:43 pm
by orx626
Posted: Fri Mar 16, 2007 5:57 pm
by Fatty
yes orx626, i reckon his girlfreind accidently dropped her hairdryer in there.
pics please!!
Posted: Fri Mar 16, 2007 6:36 pm
by JBT
I'm gonna tell his Mum
Posted: Fri Mar 16, 2007 6:38 pm
by StanTheMan
yea i was wondering about that.......what happent about that revelation of using imperial or metric with Captain Tool.
does seriously sound like a Turbo to me.....
Re: Strange Engine Sound...
Posted: Fri Mar 16, 2007 6:49 pm
by NMX516
Boags'MX5 wrote:Hi guys,
I've developed a strange whistle coming from the intake somewhere.
It starts from about 2000rpm and gets louder the further down my right foot is. I'm guessing it's got something to do with vacuum, any ideas?
I'll post some pics of where it is coming from later on.
Boags
Looking forward to seeing the pics!
Posted: Fri Mar 16, 2007 8:57 pm
by sabretooth
Perhaps some leaky fridge seals on that whitegood of yours? :p
Posted: Fri Mar 16, 2007 9:43 pm
by Andrew
link Whooo whoooooo
Maybe a hairdryer got stuck between the head and the dump pipe 
