Hey folks,
This is my breaker, just curious, do we think this is a bent con rod?
The PCV system is blocked and it started making this noise a couple of days after a remap I'm told.
Hey folks,
This is my breaker, just curious, do we think this is a bent con rod?
The PCV system is blocked and it started making this noise a couple of days after a remap I'm told.
Last edited by AcidicDavey; Wednesday 25th March 2015 at 02:17.
98 V70 AWD - Long Term Companion. Loads of little changes, the Volvo with a twist.
96 850 R Estate - Pink Pus, project pulled from the weeds!
Oh, plus a glorious (but dead) 01 Alfa 166 V6 and a 05 Liquid Yellow Clio 182.
Sounds more like top end to me?
If a rod was bent then surely it would misfire on that cylinder. Yours, from what I can hear, is not misfiring. There is definitely a metallic noise but as Sweep says, it's more top end.
Think you'll need to do a compression test to at least isolate the problem. It could also be a hydraulic lifter has gone solid or not filling with oil.
2014 V60 Polestar 6spd Auto :: Polestar map peak boost 17.4psi :: IPD 3" DP + 150cel :: Polestar 2.5" exhaust :: Paddle Shift Geartronic :: Black glass :: Maxton Splitter :: K+N Filter :: IPD Aluminium Top engine mount :: Brembo 6 pots :: 20" Polestar rims :: Brembo 371mm floating discs :: Sensus RTi + DAB + BT + WIFi :: D3S XENARC 6000k Active bending headlights
Could be a lifter, worth a oil change n filter
Yes they don't miss fire with a bent con rod they do have a destintive noise that gets faster as the revs raise
The car went back to the tuners after the noise started, full service yet noise obviously persisted.
If you listen to the clip again yes there is a lot of what sounds like top end tapping but also under that there is a slightly deeper sound tapping noise, the recording has quite picked that up too well
Anyway, I don't have a crane and if anyone wants this bare engine they can have it for FREE if they come and remove it out the top as I still need to be able to roll the car around.
98 V70 AWD - Long Term Companion. Loads of little changes, the Volvo with a twist.
96 850 R Estate - Pink Pus, project pulled from the weeds!
Oh, plus a glorious (but dead) 01 Alfa 166 V6 and a 05 Liquid Yellow Clio 182.
Sounds rod like to me, as already said mine ran smoothly and perfectly when I bent a rod, you honestly wouldn't have known if you always drove the car with the windows up.
That's a bent rod if you ask me. Memories!
Mine sounded like the little end, had perfect compression & no miss fire. The rod was certainly bent.
Just for interest when people have bent rods which one went? Mine was number 5.
missing being Swedish
Previously:
03 S40 Sport Lux 1.9d SOLD
1998 MTE Stage 2 V70 T5 Manual SOLD
1998 V70R AWD Manual BROKEN
Biff (Thursday 26th March 2015)
I agree Dave. Sounds like a rod.
It sounds deep when the bonnet is down, so not being absorbed by the bonnet insulation = bottom end, but not a deep enough thud to be a thrown big end.
Ah, too much boost, not enough fuel...
Poor thing
Last edited by Doingitsideways; Thursday 26th March 2015 at 10:30.
this was my bent rod
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