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#1 |
Registered User
Join Date: Nov 2003
Location: Mandan, ND
Posts: 422
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The push in oil cap keeps blowing off!
WTH?
I changed the intake, finally got the timing right. All good right? I pull out of the drive and go along then accelerate prety good, and then bang, it hits the underside of the hood. So I go back and thought that maybe I left it off or in loose. I look it over and adjust the timing again. I leave again and go a little further and and boom it happens again. I have no explanation for this one. Fix one thing, and then another happens. OOOOOOOOOOOOooooooooooooo boy! thanks for listening! Ron
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Life is full of choices and a Chevy is the best choice. 1990 Chevy SWB |
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#2 |
Pronounced "Pew-al-up"
Join Date: Oct 2002
Location: Puyallup, Washington
Posts: 845
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Got a plugged PCV Valve????? Too much crankcase pressure!!
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Classic GM Trucks of Washington Club Member 1970 FS chevy,350/350, Edelbrock cam and intake. Holley 650 carb,HEI,AT,Tangier Orange, 18's, Power Locks, Truck Photos |
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#3 |
PROJECT 7DEUCE
![]() Join Date: Dec 2002
Location: GRANTS PASS OR
Posts: 21,608
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Had the same thing happen scared the crap outta me.. Never did fix the problem but did put in a new crate motor has not happend since.LOL
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GO BIG GREEN ![]() MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P.. |
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#4 |
Registered User
Join Date: Nov 2003
Location: Mandan, ND
Posts: 422
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Valve is not even a month old, but I guess I could replace to see if it changes anything. If it does not, then what?
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Life is full of choices and a Chevy is the best choice. 1990 Chevy SWB |
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#5 |
Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
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your building pressure somehow that pcv valve could be stuck most likely possibility
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Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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#6 |
Pronounced "Pew-al-up"
Join Date: Oct 2002
Location: Puyallup, Washington
Posts: 845
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Can you blow through it??
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Classic GM Trucks of Washington Club Member 1970 FS chevy,350/350, Edelbrock cam and intake. Holley 650 carb,HEI,AT,Tangier Orange, 18's, Power Locks, Truck Photos |
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#7 |
Registered User
Join Date: Nov 2003
Location: Mandan, ND
Posts: 422
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uhhhh. blow through what?
ohh the valve! I gotcha! lol I have not tried. I will just buy a new one in the morning to have a new one.
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Life is full of choices and a Chevy is the best choice. 1990 Chevy SWB |
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#8 |
Too many is never enough!
Join Date: May 2003
Location: Idaho Falls, ID
Posts: 455
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pcv valve
rattle the pcv valve just to make sure it isn't stuck. also check the hose to the carb and the carb itself. Has to be there somewhere. Your cap is on the same valve cover as the valve right?
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Jason 1968 K10 SWB Fleetside 1971 K2500 GMC LWB 1968 K20 (later frame, donor body) 1972 C20 LWB parts truck 1993 K2500 Suburban, tow rig, 454, 4L80E NEW!! 18' Siem's car hauler 2004 Honda Odyssey (family man!) |
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#9 |
Registered User
Join Date: Nov 2003
Location: Mandan, ND
Posts: 422
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The valve is on the back drivers and the cap is the front passenger side. Where the cap is there used to be a hose going from the valve cover to the underside of the breather.
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Life is full of choices and a Chevy is the best choice. 1990 Chevy SWB |
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#10 |
Too many is never enough!
Join Date: May 2003
Location: Idaho Falls, ID
Posts: 455
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breather
Do you have a breather on the same side as the oil fill? That could be your problem. On small blocks anyway, they have the fill on the same side as the pcv (both sides sometimes) and the pcv provides the pressure relief for that side. The other side has the vent hose running to the carb stack. If all you have on the passenger side is the oil fill with no breather, that could be the problem. I believe this is why earlier small blocks had the oil fill through the intake since there was no pcv valve on the cover. And of course, I could be completely off base here but that is my best guess.
Jason
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Jason 1968 K10 SWB Fleetside 1971 K2500 GMC LWB 1968 K20 (later frame, donor body) 1972 C20 LWB parts truck 1993 K2500 Suburban, tow rig, 454, 4L80E NEW!! 18' Siem's car hauler 2004 Honda Odyssey (family man!) |
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#11 |
Pronounced "Pew-al-up"
Join Date: Oct 2002
Location: Puyallup, Washington
Posts: 845
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On mine the PCV is on the passenger side rear with hose to breather, the oil filler was on the drivers rear, and another hose went from the drivers front to the carb??
When I installed my New carb I went from the PCV to the carb, and then just have a filler on the drivers front. ![]()
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Classic GM Trucks of Washington Club Member 1970 FS chevy,350/350, Edelbrock cam and intake. Holley 650 carb,HEI,AT,Tangier Orange, 18's, Power Locks, Truck Photos |
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#12 |
Registered User
Join Date: Apr 2003
Location: missouri city, tx
Posts: 4,486
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your engine is haunted man.......
i would think your pcv is stuck or something.
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70 longbed 496/th400/Ford 9" |
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#13 |
Its Magically Delicious
Join Date: Jan 2003
Location: oregon
Posts: 2,398
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my stock 350 is setup like is :
passenger side.... front = oil cap ......rear = flame arrestor driver side front = pcv valve
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71 C10 LWB 350sbc -TH350 12 bolt 3.42 Posi Of all my favorite things to do, The utmost is to have a brew. My love grows for my foamy friend, with each thirst-quenching elbow bend. Beer so frosty, smooth, and cold it's paradise pure liquid gold. Yes beer means many things to me that's all for now cus I gotta pee. |
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#14 |
Senior Member
Join Date: Jun 2001
Location: Shelbyville, KY
Posts: 3,269
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My pure stock 71 has the oil filler on the drivers rear and the pcv on the drivers front. It has the flame arrestor tube/hose to the carb stack on the pass rear. this setup insures pressure relief for both sides.
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#15 |
Registered User
Join Date: Apr 2003
Location: missouri city, tx
Posts: 4,486
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yall are confusing me. heres what i got... is the thing on the passenger rear the pcv? and the drivers front is the oil filler/breather?
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70 longbed 496/th400/Ford 9" |
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#16 | |
Don't say "Oops!", Doctor
Join Date: Nov 2003
Location: Houston, TX
Posts: 677
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Quote:
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'Mutt 1968 CST LWB: R.I.P. 1967 Chevelle: TPI 454 beast 1967 C10 SWB: Claimed when Bumpster didn't put it on his list |
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#17 |
Failure is NOT an option!
Join Date: Feb 2003
Location: greenwood s.c.
Posts: 811
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Dinnut,Thats wher the pcv should go but I can't tell if you actually have one from this pic.It doesn't look like it from that angle,only looks like a hose.
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House payment or truck parts?????.........why does life have to be so complicated? 1969 Chevy Shortbed Fleetside 1969 Camaro ps pb a/c(drove in high school now it's just a yard ornament,but it's next on the list for resto) 1990 Ni$$an hardbody( daily beater that has been really beaten!) 1999 Grand Am GT(wifes ride...never buy a pontiac!!Trust Me) |
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