4 cylinders lost?

[ZOOTV]

Hi Guys,

The car when parking has been shuddering when turning the steering wheel so I assumed something might be going wrong the power steering pump.

After going back to the car tonight I turned to drive off and the shudder was there however I notice engine power loss when accelerating.

I stuck the boot into the car and it was very unresponsive but reved out but I noticed the engine sounded rough.

When I pulled into the driveway at home the engine sounded weird and the revs were low around 500rpm and the car sounds like it's only running on 4 cylinders.

Has anyone any ideas what could be going on? I've read anything from a valve Spring, pcm, 02 sensors, coils, leads and spark plugs. I changed the spark plugs and leads about 6 months ago.

I'm a little worried this is going to be something major like a broken valve Spring and it has kissed the piston and big dollars will be required.

I will quickly add that no warning lights are showing on the dash.

 

[ZOOTV]

Weirdly a sparkplug lead was loose. How's that even possible?

 

[ZOOTV]

Well that hasn't worked. It's idling at 500rpm and almost stalling in drive. It's running pretty rich and is surging and almost back firing and the car is shaking like a bastard.

It's not throwing any error codes though it does seem like a sparking issue to me at this point before I take the plugs out and have a look.

 

[Not_An_Abba_Fan]

I'd be checking all the leads and plugs.

 

[ZOOTV]

Yeah doing that now. For something so easy it's a bitch lol

 

[ZOOTV]

7, 5, 3,1 sparkplugs have fouled. 8,6,4,2 are perfect. Need a scan tool now to hopefully work out what the issue is.

 

[Not_An_Abba_Fan]

Check your power to that side coil packs.

 

[ZOOTV]

I changed 4 spark plugs and the 02 sensors and all seems ok. What should my car be idling at? Maffless tune, 1/78 extractors and 3 inch exhaust all the way through and otr. It's idling now at between 600 and 650rpm I don't know the exact number. But it is the line above 500rpm

 

[Not_An_Abba_Fan]

Base idle is set in the tune, so what ever the tuner set it at, but then vacuum leaks, dirty sensors or bad connections can cause low idle too. The ECU pretty much controls it though.

 

[ZOOTV]

All seems to be going ok replacing the 4 spark plugs and the O2 sensors.