plenum pull troubles - ZR-1 Net Registry Forums

a1991zr1 · 09-25-2011

I have pulled this plenum three frickin times to fix vacuum leaks and starter the third time crank no-start was a dreaded bent pin now it starts and runs great however saw white steam out of exhaust and immediately shut it down. no water in oil and plugs are clean. i had some antifreeze get in a secondary forgot to drain the third time shop vac it out and before starting pulled plugs and blew out cylinders by turning it over. what the hell have i done. it finally was idling at 704 and idc was at 43 not zero and she runs great. please tell me it didn't totally screw up as this was my inheritance and right now i am sick to my frickin stomach.

LGAFF · 09-25-2011

coolant leak.....did youuse new gaskets? and where did you get them from?

If you got some in the IHs.....does not take much to create a lot of smoke..

a1991zr1 · 09-25-2011

My father owned an Auto parts store and Had several sets of gaskets and before i sold the store I built a stock pile of plugs wires rotors calipers compressor alt. starter etc. there is no water in oil at all and antfrezze system will hold pressure could this be what the residule in Ih and it just needs to run I really dont want to f this up first plenum pull and it has been rough. wish dad were alive i need a little moral support right now.

LGAFF · 09-25-2011

Its possible, some may have moved into the exhaust and is buring ogg... if they are stock gaskets they should not leak. I am sure you know this, but just in case, there is coolant that runs through the plenum.

Best bet would be to drain some of the coolant out of the drain **** and pull it to inspect and reseal. PITA, but no way to guarantee whats going on without being there.

a1991zr1 · 09-25-2011

should i let it run and see if steam stops she runs so damn good and has no hesitation the idle is perfect no codes found in history fuel pressure is perfect. just pulled all plugs and none are washed hell none were wet. now what should i do turn it over again with no plugs and there ( and inj fuses pulled') and there was nothing to come out of cylinders should i run it for a few or yank this prick again.

a1991zr1 · 09-25-2011

do you mind calling me 936 828 1908 so we can chat

a1991zr1 · 09-25-2011

DOES ANY ONE ELSE THINK THE SAME I STILL HAVE NOT STARTED IT KIND OF SCARED

a1991zr1 · 09-25-2011

oK I HAVE DRAINED RADIATOR AND PULLED PLENUM GASKETS LOOK BRAND NEW DOES NOT SHOW ANY LEAK. I DRAINED ALL THE OIL NO WATER FOUND AT ALL. NEW OIL AND FILTER AND CLEANED UNDER PLENUM YET AGAIN. I REPLACED ALL SOFT RUBBER VACUUM LINES AND USED IDEAL CLAMPS AND ZIP TIES ON SMALL FITTINGS WITH THE MIGHTY VAC HOLDS 50NG STRONG WITH NO LEAK DOWN AFTER 5 MINUTES. REPLACED COILS AND WIRES FOR THE HELL OF IT AND CHECKED SECONDARIES ADJUST AND ALL SEEM CLOSED TIGHT. THE NEW MSD COILS LOOK GREAT. CHANGED ALL PLUGS WITH AC DLECO PLATINUMS AND GAPPED AT .35. REFILLED RADIATOR AFTER FLUSHING IT AND ADDED TO BOTTLES OF WETTER AND NEW ANTIFREEZE. ALSO NOTICED SERP BELT HAD CRACK ON UNDERSIDE SO R&R THE SERP BELT AND THE TENSIONER JUST FOR SAFE KEEPIN. PUT A NEW OPTIMA BATTERY AND CHECKED FUEL PRESSURE 57 OBS HOLD STRONG. ALSO BLEW OUT DRAIN IN INTAKE VALLEY AND USED BLUE LOCTITE ON COIL BRACKET AND THE BRACKET IN THE FRONT SOME OF THOSE BOLTS WERE HAND TIGHT. I THINK I HAVE IT ALL FINISHED, GOING TO TAKE A 1 HOUR COOL DOWN BREAK AND THEN TRY TO START YET AGAIN. GENTLEMAN THE FIFTH TIME BETTER BE THE CHARM. I HAVE DEFINATLY POPPED THE PLENUM CHERRY.

"No bastard ever won a war by dying for his country. He won it by making the other poor dumb bastard die for his country. "

George S. Patton

a1991zr1 · 09-25-2011

ALSO WHY DOES IT SAY L98 UNDER MY NAME IT IS AN LT5 CAN SOME ONE FIX THIS PLEASE

mike100 · 09-25-2011

It sounds like you didn't drain the water lever down far enough and just dribble some coolant into the intake ports. If it didn't break it already, you'll be fine. pulling the plugs was good insurance for that.

it will just steam for a couple of minutes. If there was so much as to get into the mufflers (like when a head gasket blows), it could take 15 minutes, but I think you'll be fine.

09-25-2011	#1
a1991zr1 Join Date: Sep 2011 Location: montgomery tx Posts: 65	plenum pull troubles I have pulled this plenum three frickin times to fix vacuum leaks and starter the third time crank no-start was a dreaded bent pin now it starts and runs great however saw white steam out of exhaust and immediately shut it down. no water in oil and plugs are clean. i had some antifreeze get in a secondary forgot to drain the third time shop vac it out and before starting pulled plugs and blew out cylinders by turning it over. what the hell have i done. it finally was idling at 704 and idc was at 43 not zero and she runs great. please tell me it didn't totally screw up as this was my inheritance and right now i am sick to my frickin stomach.

09-25-2011	#2
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: plenum pull troubles coolant leak.....did youuse new gaskets? and where did you get them from? If you got some in the IHs.....does not take much to create a lot of smoke.. __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

09-25-2011	#3
a1991zr1 Join Date: Sep 2011 Location: montgomery tx Posts: 65	Re: plenum pull troubles My father owned an Auto parts store and Had several sets of gaskets and before i sold the store I built a stock pile of plugs wires rotors calipers compressor alt. starter etc. there is no water in oil at all and antfrezze system will hold pressure could this be what the residule in Ih and it just needs to run I really dont want to f this up first plenum pull and it has been rough. wish dad were alive i need a little moral support right now.

09-25-2011	#4
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: plenum pull troubles Its possible, some may have moved into the exhaust and is buring ogg... if they are stock gaskets they should not leak. I am sure you know this, but just in case, there is coolant that runs through the plenum. Best bet would be to drain some of the coolant out of the drain **** and pull it to inspect and reseal. PITA, but no way to guarantee whats going on without being there. __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

09-25-2011	#5
a1991zr1 Join Date: Sep 2011 Location: montgomery tx Posts: 65	Re: plenum pull troubles should i let it run and see if steam stops she runs so damn good and has no hesitation the idle is perfect no codes found in history fuel pressure is perfect. just pulled all plugs and none are washed hell none were wet. now what should i do turn it over again with no plugs and there ( and inj fuses pulled') and there was nothing to come out of cylinders should i run it for a few or yank this prick again.

09-25-2011	#6
a1991zr1 Join Date: Sep 2011 Location: montgomery tx Posts: 65	Re: plenum pull troubles do you mind calling me 936 828 1908 so we can chat

09-25-2011	#7
a1991zr1 Join Date: Sep 2011 Location: montgomery tx Posts: 65	Re: plenum pull troubles DOES ANY ONE ELSE THINK THE SAME I STILL HAVE NOT STARTED IT KIND OF SCARED

09-25-2011	#8
a1991zr1 Join Date: Sep 2011 Location: montgomery tx Posts: 65	Re: plenum pull troubles oK I HAVE DRAINED RADIATOR AND PULLED PLENUM GASKETS LOOK BRAND NEW DOES NOT SHOW ANY LEAK. I DRAINED ALL THE OIL NO WATER FOUND AT ALL. NEW OIL AND FILTER AND CLEANED UNDER PLENUM YET AGAIN. I REPLACED ALL SOFT RUBBER VACUUM LINES AND USED IDEAL CLAMPS AND ZIP TIES ON SMALL FITTINGS WITH THE MIGHTY VAC HOLDS 50NG STRONG WITH NO LEAK DOWN AFTER 5 MINUTES. REPLACED COILS AND WIRES FOR THE HELL OF IT AND CHECKED SECONDARIES ADJUST AND ALL SEEM CLOSED TIGHT. THE NEW MSD COILS LOOK GREAT. CHANGED ALL PLUGS WITH AC DLECO PLATINUMS AND GAPPED AT .35. REFILLED RADIATOR AFTER FLUSHING IT AND ADDED TO BOTTLES OF WETTER AND NEW ANTIFREEZE. ALSO NOTICED SERP BELT HAD CRACK ON UNDERSIDE SO R&R THE SERP BELT AND THE TENSIONER JUST FOR SAFE KEEPIN. PUT A NEW OPTIMA BATTERY AND CHECKED FUEL PRESSURE 57 OBS HOLD STRONG. ALSO BLEW OUT DRAIN IN INTAKE VALLEY AND USED BLUE LOCTITE ON COIL BRACKET AND THE BRACKET IN THE FRONT SOME OF THOSE BOLTS WERE HAND TIGHT. I THINK I HAVE IT ALL FINISHED, GOING TO TAKE A 1 HOUR COOL DOWN BREAK AND THEN TRY TO START YET AGAIN. GENTLEMAN THE FIFTH TIME BETTER BE THE CHARM. I HAVE DEFINATLY POPPED THE PLENUM CHERRY. "No bastard ever won a war by dying for his country. He won it by making the other poor dumb bastard die for his country. " George S. Patton

09-25-2011	#9
a1991zr1 Join Date: Sep 2011 Location: montgomery tx Posts: 65	Re: plenum pull troubles ALSO WHY DOES IT SAY L98 UNDER MY NAME IT IS AN LT5 CAN SOME ONE FIX THIS PLEASE

09-25-2011	#10
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,786	Re: plenum pull troubles It sounds like you didn't drain the water lever down far enough and just dribble some coolant into the intake ports. If it didn't break it already, you'll be fine. pulling the plugs was good insurance for that. it will just steam for a couple of minutes. If there was so much as to get into the mufflers (like when a head gasket blows), it could take 15 minutes, but I think you'll be fine.