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Nissan Primera P11 started smoking

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    Posted: 06 Jul 2019 at 9:41pm
Yes- I will try and borrow another compression tester kit.

I think the guy who did the first compression test did it abit wrong- however given the way he did the test still seems that cylinders 2 & 3 were probaly lower than the 1 & 4. Which would suggest either worn Piston rings/ valve guides etc or the head gasket.
I guess a wet test may reveal more.Shocked


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Post Options Post Options   Thanks (1) Thanks(1)   Quote p11primeragt Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jul 2019 at 9:08pm
Do a wet compression test then to confirm one or the other.

Add a small amount of oil onto the pistons then check,if the readings go up then it's the rings/bores.If it stays the same then it's the valves/head gasket but since you say 2 cylinders next to each together are low then that is a classic sign of the head gasket on it's way out.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote d60_tag Quote  Post ReplyReply Direct Link To This Post Posted: 02 Jul 2019 at 1:42pm
Still smoking- think she is dead!

Think also my Mate didn't read compression test exactly right, middle 2 cylinders took 2 more cranks than the 1 & 4th to get upto pressure which to me suggest they are low and probably head gasket on the way out.
Think this has gradually been happening for last 3 months or so, getting worse and worse. Had the car 3 years and it did well given it was such an old car anyway.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote d60_tag Quote  Post ReplyReply Direct Link To This Post Posted: 28 Jun 2019 at 5:07pm
Its odd- spark plugs all nice colour, just checked them- compression test was really good at 215-220 Psi odd for all 4 cylinders... the middle 2, 2&3 did take a couple more cranks of engine to get upto pressure though than 1 and 4.

Just changed the oil and filter- probably hadn't been done for 2 years although I do not do lots of miles. Coolant level did seem abit high so have levelled/drained  it off.

Will make another test run and see if she still smokes. Guess first things first, like simply changing the oil and filter and then seeing if still the same.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote d60_tag Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2019 at 12:59pm
Originally posted by p11primeragt p11primeragt wrote:

Only other thing that comes to mind is the Maf sensor, but check that little gasket.

where is the little gasket located p11primeragt? I will check that.

Could the MAF have gone bad and be causing any of this? I would say she is burning oil and that suggests like valve/ head damage?

On hindsight, this has been happening for about the last month, I kind of thought out of the wing mirror I did see on occasions more exhaust smoke than I should, now has became worse.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote d60_tag Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2019 at 12:54pm
Update- not so good- problem still exists.

Seems very odd- think its burning oil rather than coolant or fuel related excess smoke. Hard to tell the exact colour of the smoke when it happens(mainly up hills under load) but think it also has abit of an oil type smell and car dipstick shows its gone down abit. So would say prob is burning oil. Yet the compression test was within spec according to my mate and he didn't even bother putting thimble full of oil down the bore because he said all cylinders had okay compression anyway within spec.

Kind of thinking head gasket or something? - I mean the oil must be getting through the rings somehow even though compression seems okay?

I may try changing the oil- I did start putting in some 5w/30 Fully synth in with the older oil which was 10w/40 Semi synth but think the 5w/30 Fully synth is good for the 1.6 DE anwyay, so not sure. somehow think the problem maybe abit bigger than the oil type causing this.

I think she maybe on borrowed time!

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Post Options Post Options   Thanks (0) Thanks(0)   Quote p11primeragt Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jun 2019 at 7:09pm
Only other thing that comes to mind is the Maf sensor, but check that little gasket.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote d60_tag Quote  Post ReplyReply Direct Link To This Post Posted: 25 Jun 2019 at 9:57pm
Thanks again Brian- gasket info etc- . I sucked on the PCV valve and sucked clear air  and blew and it shut off- so presume that's good.

I got my mechanic mate round and we did compression test- all within spec- higher slightly even about 14 Bar and fairly equal pressure- cyl 2 & 3 were slightly slower to reach pressure than 1& 4. But decent sort of pressure for all 4- 220 psi- 225 psi thereabout for all 4.

Plugs were really very lean looking though- more than a few deposits- white and grey- also air fliter was not that great looking- will get another tomorrow- and also prob change spark plugs as they were in far too lean/ hot state.
We gave all the filter housing/ induction pipe- that boost bootle type chamber all a good clean and blast with airline- they were abit messy looking and poss not flowing or sealed so nice.

Mate reckoned its maybe suffocated with little air flow with blocked filters and ECU is totally weirding and all the whole mixture is totally out.

Will retest tomorrow- but compression test looks okay- which is a relief.

Maybe another 100,000 miles in the old girl still... hahah- she has just reached 100,000 actually!

Thanks again for the help and info Brian. Much appreciated and any other ideas or thoughts.
Approve

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Post Options Post Options   Thanks (1) Thanks(1)   Quote p11primeragt Quote  Post ReplyReply Direct Link To This Post Posted: 25 Jun 2019 at 4:49pm
No it's separate.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote d60_tag Quote  Post ReplyReply Direct Link To This Post Posted: 25 Jun 2019 at 4:40pm
Thanks p11primeragt- funny that- I did only recently change the rocker gasket cos the old one leaked.
Is this little rectangle gasket part of the main one or a seperate one? Where is it located?

I'll go and check the PCV valve in an hour or so when I go back out there.
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