Oil fuel mix sitting on chev manifold pic why?? - Holden General Discussion

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Fastlane » Holden Forums » Holden General Discussion » Oil fuel mix sitting on chev manifold pic why??

Oil fuel mix sitting on chev manifold pic why??

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keithholden		#1 Posted : Wednesday, 12 September 2007 4:29:22 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 31/08/2005(UTC) Posts: 349 Thanks: 1 times		Hi I drove my holden down the road and back with no back doors and I mickied up the wires to get it going. After I stopped I noticed a small pool of petrol and oil mixture on the intake manifold. It appears to be comming from the accelerator pump. Why would oil be mixed with petrol?? I cant see any where else the oil came from. pic link hope it works Cheers http://img237.imageshack...=petrolandoilmixfh5.jpg If its not broke it will be soon
		If its not broke it will be soon


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Duzty		#2 Posted : Wednesday, 12 September 2007 6:51:48 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 29/06/2005(UTC) Posts: 706		i have EXACTLY the same problem, i thought it was carby, which i got rebuilt, then it was still happening but no fuel this time. it then got serviced the other day and found to come from rocker covers so im changin all the gaskets. [IMG]http://www.m


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keithholden		#3 Posted : Wednesday, 12 September 2007 2:46:30 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 31/08/2005(UTC) Posts: 349 Thanks: 1 times		Hi thanks ill try that.. I cant see a stream coming from the rocker covers but no doubt they are quite old and not to expensive so will replace them. I thought it was a mix of oil and petrol coming from the carb but couldnt work out how this would happen
		If its not broke it will be soon


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bluHJ		#4 Posted : Friday, 14 September 2007 1:05:44 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 12/08/2005(UTC) Posts: 183		Keith I had the same when I changed the inlet manifold on my 253. Turned out it was oil seeping up the manifold bolts. Don't know how as the manifold was sealing correctly. I used copper washers under the manifold bolts and a small amount of no3


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bluHJ		#5 Posted : Friday, 14 September 2007 1:05:44 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 12/08/2005(UTC) Posts: 183		Keith I had the same when I changed the inlet manifold on my 253. Turned out it was oil seeping up the manifold bolts. Dont know how as the manifold was sealing correctly. I used copper washers under the manifold bolts and a small amount of no3 n


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Guest		#6 Posted : Friday, 14 September 2007 7:22:18 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		Yep the Manifold bolt are doing it. The oil seeps out of the bolt hole and the fan blows it up the manifold around the carby. Copper washers and some locktight 515 flange sealant should fix it.

Guest		#7 Posted : Friday, 14 September 2007 4:45:31 PM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		maybe look at getting the right bolts for the rocker covers. i also had an oil leak like yours as i has them fancy wing bolts and they were forever coming loose

keithholden		#8 Posted : Monday, 17 September 2007 4:44:43 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 31/08/2005(UTC) Posts: 349 Thanks: 1 times		I Never would have thought of the wind blowing it up .. or the fancy bolts.. Cheers guys If its not broke it will be soon
		If its not broke it will be soon


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Rhys		#9 Posted : Monday, 17 September 2007 9:17:04 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 7/03/2005(UTC) Posts: 397 Was thanked: 1 time(s) in 1 post(s)		Hi Keith, I had the same problem a few years ago with my WB that had a leaking Holley 600 on it. To me it looked like/smelt like an oil and petrol mix, but in fact it was just petrol that had evaporated and turned to an oily liquid. I don't know for s


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Rhys		#10 Posted : Monday, 17 September 2007 9:17:04 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 7/03/2005(UTC) Posts: 397 Was thanked: 1 time(s) in 1 post(s)		Hi Keith, I had the same problem a few years ago with my WB that had a leaking Holley 600 on it. To me it looked like/smelt like an oil and petrol mix, but in fact it was just petrol that had evaporated and turned to an oily liquid. I dont know for su


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keithholden		#11 Posted : Sunday, 23 September 2007 2:39:53 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 31/08/2005(UTC) Posts: 349 Thanks: 1 times		Thanks Rhys. I havnt got to this yet. Been fixing ignition but when I go back to it I will now. Change tappet gaskets .remove manifold bolts and seal and get copper washers. tighten carb tank bolts .. Great stuff guys Id say with this info ill have it sor
		If its not broke it will be soon


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