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Discussion Starter #1
Driving at normal a speed around 55mph, exhaust note turns into a double pop sound and check engine light starts to blink. This morning I took the rear under tray off but no signs of exhaust leak. I noticed an unusual amount of water dripping out of the exhaust. ANY HINTS ??

05 Elise 13,500 miles stage II exhaust
 

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Driving at normal a speed around 55mph, exhaust note turns into a double pop sound and check engine light starts to blink. This morning I took the rear under tray off but no signs of exhaust leak. I noticed an unusual amount of water dripping out of the exhaust. ANY HINTS ??

05 Elise 13,500 miles stage II exhaust
Blinking engine light = serious problem

You should probably not start/drive your car. If you can borrow an OBD-II reader, read the code that was stored and report back.

BTW, is the water clear, or does it look/smell like it has anti-freeze in it?
 

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Discussion Starter #9 (Edited)
P0301 = cylinder 1 misfire detected
P1301 Misfire level causing emissions increase
P1302 Misfire level causing catalyst system damage

Found these now how to FIX ?
 

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Your did not mention (P1302) in post #7 but you did in your search results in post #9!
I am going to assume you do not have a (P1302)
 

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P0301 = cylinder 1 misfire detected
P1301 Misfire level causing emissions increase
P1302 Misfire level causing catalyst system damage

Found these now how to FIX ?
Here's what the service manual says about P0301:

Description
A misfiring cylinder can be detected by analysing crank speed variation. As a result of a combustion event there
will be a net acceleration of the crankshaft. Subsequent to a misfire event the engine will decelerate over the
period following the missed cylinder event.
Speed changes can be characterised by observing changes in the time period for a fixed angle of rotation after
firing events. A significant change in this period, assessed by comparison to previous periods, may be attributed
to misfire on a known cylinder.
...
Potential failure modes:
• Injector related codes, as these can cause misfire codes to be set.
• VVT or VVL codes set
• Sensor connector and wiring for signs of corrosion or loose connections
• Spark plug / Cylinder compression
• Cam timing / Damage to rocker arm assembly
Here's what the service manual says about P1301 and P1302:

Misfire P1301 P1302
P1301 Misfire level causing emissions increase
P1302 Misfire level causing catalyst system damage
Description
When the engine misfire reaches a high enough percentage the engine emission output levels can exceed the
allowed limits, this will produce the fault code P1301. If the misfire percentage is high enough and there is a
possibility that the catalyst may be damaged then code P1302 will be set.
See misfire faults P0300, P0301, P0302, P0303, P0304
Notes:
• The MIL will flash for a 1302 fault code
• The MIL will be illuminated if the 1301 fault is present for 2 consecutive trips.
How to fix it? Well, if you're lucky it's just a bad plug, coil pack or injector at cylinder #1. If you're unlucky... search for code P1302...
 

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Discussion Starter #13
Damn you guys ROCK

Pulled coil packs

Don’t know the orientation of 1-4 on coil pack but. Looking at the engine from the rear of the car left to right. Left looked good no corrosion left middle looked good no corrosion right middle looked rusty right looked horrible. So if I assume the far right one is cylinder one.

Thanks for the quick response as always Lotustalk.com delivers
 

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Discussion Starter #14
Well! changed out coil pack from Cyl 1 to Cyl 2 GUESS what.

Thats right Cyl 2 misfire code, so hopefully new coil pack tomorrow fixes the issue.

Thanks for the help I should of got one of these OBD2 scanners along time ago
 

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Discussion Starter #17
Innova 3100 at murrays auto parts simple plug and play
Pretty easy to use.:clap:

No lotus model so I used toyota
 
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