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Oil light flickers on idle EP3

Posted: Mon Apr 02, 2018 5:13 pm
by burnsey_100
Hello,

Here is my problem.

I changed the timing chain and tensioner and about 2/3 weeks later the oil light started to flicker on idle when warm. I changed the sensor but didn’t fix it. I replaced the oil pump and it’s still the same. I fitted an external oil pressure gauge to test the pressure all the time. This showed that I had 30psi on idle when cold but when warmed up the oil pressure drops to about 1-2 psi. On normal driving it appeared to have oil pressure in the high revs and vtec worked fine. I done some research and fingers were pointing to the crank shell Clearances. So I replaced them with the standard ones after inspecting the crank and seeing theirs no damage/scoring. Part of the top layer of the shells had worn slightly but nothing major. Done all this and it’s still the same. (Banging head against the wall) now I thought bugger it pull the motor out and have a good inspection. My thoughts were that maybe some sealent from the timing chain when I was scraping the old stuff off had fallen into the oil and maybe blocked a gallery or something. But it seems ok. Now it’s completely stripped the only problem I found along the way was, the tensioner had come loose. the cam cover had stopped the bolts coming out any further. Now I was wondering if this could have effected the oil pressure problem?
Or if you think something else maybe the problem?

Thanks

Re: Oil light flickers on idle EP3

Posted: Mon Apr 02, 2018 9:12 pm
by 15repyt
Could it be something simple as a oil filter?

Re: Oil light flickers on idle EP3

Posted: Mon Apr 02, 2018 9:16 pm
by burnsey_100
Thanks for the reply.
No, have drained the oil 3 times with new filter every time, and have used an oil flush with one oil change too.

Re: Oil light flickers on idle EP3

Posted: Tue Apr 03, 2018 7:44 am
by Cloudycloud
I’d say the oil pressure is low cause the tensioner wasn’t tight, that is were the oil has lost its pressure.


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Re: Oil light flickers on idle EP3

Posted: Tue Apr 03, 2018 8:57 pm
by 15repyt
how many miles has the engine done?

Re: Oil light flickers on idle EP3

Posted: Tue Apr 03, 2018 9:21 pm
by burnsey_100
It’s done 150k miles

Re: Oil light flickers on idle EP3

Posted: Sat Apr 07, 2018 8:39 pm
by 15repyt
Wow quite a lot then. Was the oil light flickering before the chain was done? Why did you change the chain?

Re: Oil light flickers on idle EP3

Posted: Sun Apr 08, 2018 9:42 am
by parsimony
Plumb an oil pressure gauge into the switch port and verify whether it is a genuine low pressure.
You may be very lucky and find it is only a switch problem.