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4G94 (EA7A) - Advice needed

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bongster
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4G94 (EA7A) - Advice needed

Postby bongster » June 6th, 2012, 9:16 am

Hi,
Had my engine light on recently. Car started to vibrate. Brought to a mech and was told that ignition coil had to be replaced. (Diagnosed as cylinder misfire). (1)Coil was replaced. ECU was retuned. Same thing happened again 2 mths later. Repeated the same process. (2nd coil was replaced). Happened again yesterday and the (3rd) coil was changed. Just after a day (today) this problem started again. Mech upon removing coils noticed traces of oil and said that I could have a leaking 'engine valve gasket'. Car cant be driven.
1)should i go ahead and replace the 4th coil?
2)should i replace the engine valve gasket and if so would it be a top or full overhaul?
3)would a leak cause the life span of the new coils to be shortened?

Parts have to be shipped from Japan if so as there is no ready stock. Estimated 3 weeks.

Any gurus out here on any advice as how to keep my car running during this interim. Any temp measures that I can take?
Car is 6.5 years old.

Thank you.

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rollingstock
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Re: 4G94 (EA7A) - Advice needed

Postby rollingstock » June 7th, 2012, 9:59 pm

Are you seeing oil in the coil pack stems?

Temporary fix, take off the tappet pan cover (a little work as intake manifold has to come out first) There is a rubber gasket on top the head to keep oil from getting into the spark plugs, use a high temperature silicon and replace tappet cover, should hold you over till you get a new gasket.

Replacing the coils now? The oil will cause a miss, but rarely have i seen it damage the coil, your plugs will need changing though, from the lack of proper spark they will be fouled.

dutyspeed
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Re: 4G94 (EA7A) - Advice needed

Postby dutyspeed » June 14th, 2012, 12:39 pm

agree with rollingstock

slim.shady1797@gmail.com
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Re: 4G94 (EA7A) - Advice needed

Postby slim.shady1797@gmail.com » June 15th, 2012, 1:14 pm

I had a 4G94 (2.0 litre GDi) Engine in my Galant from September 2005 to June 2011. The thing was nothing but headache from day one. I have had problems from GDi fuel pump (TT$14,000), pedal senor (TT$1200), Electronic Throttle Body (TT$7,000) to coil packs (TT$300 each) and finally spark plug fouling with engine oil.
BTW: the engine was properly maintained with regular oil and filter, spark plugs, fuel filter and air filter changes.
I finally get fed up with it, took it out and put in a used 4G93 (1.8 litre Gdi). Since June 2011 to now I have not had any problems with the 4G93. The difference was like heaven and hell. :roll:

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rollingstock
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Re: 4G94 (EA7A) - Advice needed

Postby rollingstock » June 15th, 2012, 10:13 pm

^ They both suffer similar problems but it is determined by how the vehicle was maintained (not at you eh, could be caused from foreign) and these engines do need fairly regular preventative maintenance.
14k for a fuel pump? :shock:

Complete 4g93 gdi going for 6k.

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Re: 4G94 (EA7A) - Advice needed

Postby slim.shady1797@gmail.com » June 16th, 2012, 5:39 pm

Yeah Diamond Motors quoted TT$14k for the Gdi fuel pump...and surprise, surprise i got an entirely complete 4G93 conversion kit with tiptronic tranny, ignition module, gas pedal, and x-cable from Seenaths in the bamboo for TT$7,000.

I could have bought 2 complete engine & tranny and still get change for the price of one fuel pump..life is strange

:wink:

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