power loss
12-22-2008, 12:41 AM
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power loss
Car was professionally tuned a while back (couple of weeks ago) and when out driving hard the car went all of a sudden from zippy to chug chug chug chug etc - it pops and bangs when on throttle but is fine on partial or cruise. I dont have a wideband so is there anything that I can check before going back to the dyno?
I didn
I didn
12-22-2008, 12:55 AM
#2
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Sounds like it's running way to rich on WOT or it's missing?
Are your plugs tight and in good condition?
I may be miles out there but it's something to at least check
Are your plugs tight and in good condition?
I may be miles out there but it's something to at least check
12-22-2008, 02:02 AM
#6
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I would bet that you have lost a cylinder, Kit Kat (plug nackered / injector wire snapped / injector blocked)
I had exactly the same on my Exige when I had an injector wire loose (my fault!) Car shakes due to the combustion imbalance and becomes very slow and noisy!
Check your wiring and plugs before replacing any bits.
I had exactly the same on my Exige when I had an injector wire loose (my fault!) Car shakes due to the combustion imbalance and becomes very slow and noisy!
Check your wiring and plugs before replacing any bits.
12-22-2008, 02:30 AM
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Originally Posted by MB,Dec 22 2008, 11:02 AM
I would bet that you have lost a cylinder, Kit Kat (plug nackered / injector wire snapped / injector blocked)
I had exactly the same on my Exige when I had an injector wire loose (my fault!) Car shakes due to the combustion imbalance and becomes very slow and noisy!
Check your wiring and plugs before replacing any bits.
I had exactly the same on my Exige when I had an injector wire loose (my fault!) Car shakes due to the combustion imbalance and becomes very slow and noisy!
Check your wiring and plugs before replacing any bits.
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12-22-2008, 02:36 AM
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I once started up my engine with only 3 HT leads connected up and it made a horrendous noise 
When my car was running very rich it was more of a stuttering/stalling effect.
When my car was running very rich it was more of a stuttering/stalling effect.
12-22-2008, 02:59 AM
#9
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Originally Posted by kitkat,Dec 22 2008, 11:30 AM
thanks MB - thats exactly the kind of info i need to start! BTW does that mean that its running uber rich ?
If you have a cylinder not sparking or injector stuck open then it will just be pumping unburned fuel out the exhaust.
12-22-2008, 03:19 AM
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I am no expert on S2000's as I have only just picked mine up but the symptoms do sound like one of the HT leads is starting to break down.
Before a total failure happens the lead can start to fail only at certain frequencies and you end up running on 3 cylinders, ease off the pedal and it runs fine again and ticks over with no issues.
Certainly worth checking it is something relatively easy/cheap to fix like this before exploring other causes.
Before a total failure happens the lead can start to fail only at certain frequencies and you end up running on 3 cylinders, ease off the pedal and it runs fine again and ticks over with no issues.
Certainly worth checking it is something relatively easy/cheap to fix like this before exploring other causes.