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-   -   EFI V8 Problems idlle , power, and smoke (https://www.offshoreonly.com/forums/general-q/382235-efi-v8-problems-idlle-power-smoke.html)

Nordo 04-24-2024 05:51 AM


Originally Posted by underpsi68 (Post 4896397)
A cylinder head or head gasket will not be intermittent.

Yes but thé problème , i have a smoking and oil consumption.

SB 04-24-2024 09:46 AM

Smoke - what color ? Does it do it all the time or inly when running crappy ?
Oil consumption - how much per hr ?

What’s your fuel psi when it runs like crap ? Does it run this way at any rpm/ load ?

Nordo 04-24-2024 10:53 AM

I'm going to make a video, it will be more demonstrative. The smoke is odorous and very gray/white. with a sort of oil stain in the water.

for the oil consumption, sometimes it reaches 1L for 2 hours of use I can't determine because now the problem seems permanent..

For the fuel pressure, I don't know. I will do the test with the necessary equipment this week. when it malfunctions, it runs at 400 rpm AT idle. and max ton réduction power +- 2000 rpm thank you for your answer.

On the other hand, it never stalls, and always starts very well. (Too quickly compared to the other I have the impression)

Nordo 04-24-2024 07:01 PM

I upload a vidéo for a color Smoke thank's

Nordo 04-24-2024 07:03 PM

Harg a last message for permission (10 messages) :)

Nordo 04-24-2024 07:04 PM

Here IS a vidéo


sutphen 30 04-24-2024 08:21 PM


Originally Posted by underpsi68 (Post 4896397)
A cylinder head or head gasket will not be intermittent.

oil consumption maybe either bad valve guides/seals or intake manifold gaskets.

Nordo 04-24-2024 08:54 PM

.
.
So it would be better after the leak test.
Besides, I am looking for advice on the test procedure)

Open the block and remove the cylinder head in order to check the condition of the intake gaskets, the condition of the cylinder head as well as, see the condition of the valves/seats. and valve guide seals.

An opening is obligatory. I have the impression.

I made a quote for the restoration of the 2 cylinder heads,
​​​​​​​The price for the 2 cylinder heads is between €850 and €1000 depending on the workshop
For: disassembling / reassembling the cylinder head + testing / surfacing / changing the valve stem seal / reaming of the valve seats, and lapping.
so of course no big problems. (Like crack or metal gnawing/corroding)


Hoping it's not low engine.
Piston ring


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