Author Topic: oil splatting on extractors under load? (Read 10028 times)

zlat347ci · « **on:** August 11, 2014, 08:19:09 pm »

Hi all,

Really strange I though....

Right side, near starter motor appears to blow splatter oil on the extractors? Only when reving up the engine...almost as it had a gap were the oils comming from . Hard to see location, possibly looks like between head and block but thats not a pressurised area. Ive got new valve covers and gaskets they seem well no oil leaks around

Any help would be appreciated

GLENN 70 · « **Reply #1 on:** August 11, 2014, 08:34:52 pm »

Can really be only from valve cover gasket ,or Pcv at back of valve cover leaking down onto pipes .Check that intake manifold is not leaking at rear and oil is not running down .Last check oil is not coming out of valve cover bolt holes .

Lancew · « **Reply #2 on:** August 11, 2014, 08:41:57 pm »

Take a look at the rear gasket on the inlet manifold. Usually a cork or neoprene and can over time squeeze out or fail. Under revs the rear of the Valley fills and the pressure inside the engine creates a capillary style leak. Which can then run or drip down to the exhaust.

Cheers Lance.

Salthorse · « **Reply #3 on:** August 11, 2014, 09:23:15 pm »

Is yours an auto? I had a similar problem. It turned out to be oil being blown up the transmission dip stick pipe when the stick wasn't seated properly. The tranny fluid from the FMX box dropped onto the RHS exhaust when the engine was under load.

Just a thought.

Good luck

Dave

GLENN 70 · « **Reply #4 on:** August 11, 2014, 09:32:50 pm »

Salthorse ,what happens with autos most of the time when you give them plenty ,they can blow trans oil out of the breather ,then the trans fluid goes onto the pipes .I run a hose from my breather on the box upto the top of the bell housing . Does not really happen on the street mostly on a race track or as you said from the dip stick tube .

MACH_ONE · « **Reply #5 on:** August 11, 2014, 10:00:20 pm »

check the oil as you know red trans will be trans obvious ....if its oil check around the spark plugs as well, one could be slightly loose and not seating properly. Also Mine was leaking onto the exhaust it was the valve cover which I just put on new gaskets grrr...it just needed a slight more torque ...if it was the manifold you should notice the car running a bit rough...with any liquid leaks check from the highest point and work down.

zlat347ci · « **Reply #6 on:** August 11, 2014, 10:45:44 pm »

thanks all will check all these tommorow.

On closer inspection looks like the oil us around my number 3 spark plug and the head bolt just under number 3

The starter motor looks to be drenched in oil

GLENN 70 · « **Reply #7 on:** August 12, 2014, 08:04:27 am »

Well you just answered your own question ,has to be valve cover gasket . A lot of the cheap chrome valve covers leak as do pro comp covers .If you over tighten tin covers they will leak .

zlat347ci · « **Reply #8 on:** August 12, 2014, 07:02:46 pm »

Ive checked under valve cover gaskets with Inspection mirror the head looks new with no oil residue

Looks like its from the head bolts amd down thats the starting point

GLENN 70 · « **Reply #9 on:** August 12, 2014, 07:15:02 pm »

It won't be from the head bolts or from the head gaskets .Check the plugs are tight .

shaunp · « **Reply #10 on:** August 12, 2014, 07:18:14 pm »

Quote from: zlat347ci on August 12, 2014, 07:02:46 pm

Ive checked under valve cover gaskets with Inspection mirror the head looks new with no oil residue

Looks like its from the head bolts amd down thats the starting point

No oil near the head bolts, it is coming from somewhere else.

zlat347ci · « **Reply #11 on:** August 13, 2014, 01:29:52 pm »

Checked spark plugs seemed all tight, have cleaned area but yet to drive it for test. I did notice my number 4 spark plug have large crack on the porcelen of the spark pkug itself. Unrelated but intresting.

zlat347ci · « **Reply #12 on:** August 13, 2014, 08:23:28 pm »

Picture of spark plug 4 and highest point I could traceoil residue

You can almost see the oil residue on extractor. The blue ridge you see below extractor is where the oil builds a little puddle and splats from there I beleive

GLENN 70 · « **Reply #13 on:** August 13, 2014, 09:09:24 pm »

Are you sure it is oil and not an extractor leak leaving black soot .

MACH_ONE · « **Reply #14 on:** August 13, 2014, 09:24:26 pm »

the last picture the valve cover above the spark plug looks like oil is there between the valve cover and extractors it could be just the picture...but try this start the car up and warm it up...when its at operating temperature grab a piece of white paper and hold it so the edge of the paper is up against the head just under the valve cover and above the extractor where number 4 spark plug is have someone rev the car up and see if any oil is splattering on the paper. you might have to sit the revs on about 2000 rpm for about a minute.

btw replace that spark plug with the crack

zlat347ci · « **Reply #15 on:** August 13, 2014, 09:26:06 pm »

Couple days ago I changed new felpro exhuast manifold gaskets. Definitely oil and it finds its way down and drips on my garage floor. Ive got it booked in for dyno tune for new carby and few bits n peices so will get a second opinion

zlat347ci · « **Reply #16 on:** August 13, 2014, 09:29:42 pm »

Great idea with the paper will try tommorow sometime.

Ill get the mechanic to throw a new set of plugs on friday. Looking forward to getting it running right. Recurving dizzy aswel.

MACH_ONE · « **Reply #17 on:** August 13, 2014, 09:50:03 pm »

Quote from: zlat347ci on August 13, 2014, 09:26:06 pm

Couple days ago I changed new felpro exhuast manifold gaskets. Definitely oil and it finds its way down and drips on my garage floor. Ive got it booked in for dyno tune for new carby and few bits n peices so will get a second opinion

Im wondering if you might have put a hairline crack in the head doing up the manifold bolt. (hope not)

also mate I would not put the car on a dyno until the oil problem is sorted...on the dyno the car is taken to its max..if you ever take a car on a dyno you should make sure all spark plugs oil and coolant are all good if not new or near new.If you are experiencing oil problems such as yours wait until you see what a dyno will do...oil will fly out.

The carby can be put on and tuned without a dyno then later on to get optimum performance once the oil leak is fixed get it dyno ed

zlat347ci · « **Reply #18 on:** August 13, 2014, 10:21:06 pm »

Yeah ill get him to sort this issue first then tune. That was the plan. Fingers crossed he can track it down

zlat347ci · « **Reply #19 on:** September 23, 2014, 10:00:51 am »

Ok so still battling this issue. This is a clearer photo of the leak, it seems isolated to that one area. You can also see the exhuast area. I know theres no pressure in that area but how does the oil get on the exhuast? Its in line with the leak not ontop to say its dripped down. Got me puzzled. This image was taken after a complete engine degrease after several drives this was noticed. The valve covers and intake are bone dry.

aussie trev · « **Reply #20 on:** September 23, 2014, 10:09:15 am »

Is there a crack in the header pipe.in photo it looks like theres a burn mark underneath.long shot,maybe coming out of exhaust.

GLENN 70 · « **Reply #21 on:** September 23, 2014, 10:09:44 am »

Are you sure it's oil ? . Not a blown gasket from extractors or head .

GLENN 70 · « **Reply #22 on:** September 23, 2014, 10:12:11 am »

Put it on stands clean that section right up ,start the engine and get someone to rev it up while you are under the car . Jack it up in a very safe manner .

zlat347ci · « **Reply #23 on:** September 23, 2014, 10:56:46 am »

I cannot see any cracks checked all around with the inspection mirror. Also just had these hpc coated several months back. Just doesnt make sense to me. Even the oil leak itself is bizare, just in that one area

69ISH · « **Reply #24 on:** September 23, 2014, 12:06:40 pm »

I am no expert in this field but to me it looks like the stain on the headers is closest to the block, The oil leak appears to be between the block and the heads which would mean that you have a blown head gasket blowing oil onto the headers in my opinion.

oil splatting on extractors under load?

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Author Topic: oil splatting on extractors under load? (Read 10028 times)