Engine Big problems

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rockyracoon

10 Year Member

Nov 23, 2005

874

27

49

margate NJ

Apr 1, 2020

#1

• Apr 1, 2020

• #1

Well finished my HCI project today and ive got big problems. The car fired right up and the idle with the TFS stage 1 cam was awesome but I noticed white smoke coming out of both tailpipes and once the car warmed up I could see coolant spraying from somewhere just below the passenger side valve cover back by the firewall. It seemed like it would spray in cycles based on the thermostat. So evidently coolant is leaking externally and also getting into the combustion chambers or at least some of them.Did not see any coolant in the oil though. My guess is the gt-40 lower is the culprit but I would appreciate any comments. Or advice.

 

General karthief

wonder how much it would cost to ship you a pair

Mod Dude

Aug 25, 2016

27,824

10,505

203

polk county florida

Apr 1, 2020

#2

• Apr 1, 2020

• #2

That could be. Grab a mirror and a flashlight so you can look behind the head/intake

 

90sickfox

Wasn't a pretty sight...and I've got big hands

SN Certified Technician

Mar 2, 2015

6,945

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213

Apr 1, 2020

#3

• Apr 1, 2020

• #3

Was it thick white smoke ? Could've just been condensation...or something burning off in the exhaust. Most often the intake gaskets will put coolant in the oil...but can put coolant in the front or rear cylinders. Could pull plugs and check cylinders for coolant. A scope helps but a pressure tester will push coolant enough to puddle real good in a cylinder. It would also help a lot finding external leaks.

 

Reactions: General karthief

R

rockyracoon

10 Year Member

Nov 23, 2005

874

27

49

margate NJ

Apr 1, 2020

#4

• Apr 1, 2020

• #4

Its burning for sure as the puddles beneath the tailpipes were sweet liquid. 90 % sure the external leak is coming from between the head and intake. Im wondering if its worth a shot at trying to re torque the lower intake to head bolts.

 

General karthief

wonder how much it would cost to ship you a pair

Mod Dude

Aug 25, 2016

27,824

10,505

203

polk county florida

Apr 1, 2020

#5

• Apr 1, 2020

• #5

You could try but I'm willing to bet the intake gasket slipped.

 

90sickfox

Wasn't a pretty sight...and I've got big hands

SN Certified Technician

Mar 2, 2015

6,945

5,816

213

Apr 1, 2020

#6

• Apr 1, 2020

• #6

Yup...what the thief said. Might as well pull it and find out what's wrong. Look in the throttle body too. I had an issue where I didn't tighten the throttle body to the egr spacer. It was spraying coolant....and putting coolant in the intake.

 

2000xp8

SN Certified Technician

Aug 8, 2003

8,014

1,611

194

NJ

Apr 2, 2020

#7

• Apr 2, 2020

• #7

No point in torqueing it down.
The gasket is already compromised.
Besides you NEED to know you found the leak, last thing you want is water making it's way into the oil.
And the intake comes off relatively easy.

 

Reactions: General karthief

R

rockyracoon

10 Year Member

Nov 23, 2005

874

27

49

margate NJ

Apr 2, 2020

#8

• Apr 2, 2020

• #8

My egr is external so no cooling.
So I pulled the intake and will get new gaskets but im going to permatex around the cooling ports this time.. I also had a rapping noise coming from number 3 cylinder. I could have sworn it was an exhaust leak but im almost positive it was not, I think it is one of the number 3 lifters . While I have the intake off I think I may swap em out. But in my experience a lifter usually ticks and this was a rapping noise. The noise was the loudest right at the header flange. But there is no indication of an exhaust leak there.

 

JD1964

there is enough sticking out to grab on to

15 Year Member

Jun 28, 2013

3,427

1,518

194

Maryland

Apr 2, 2020

#9

• Apr 2, 2020

• #9

What intake gaskets did you use? I recommend Felpro 1250-S. The s is important and indicates gasket layered with steel core. The straight 1250 looks similar but does not have the steel core and has a tendency to deform.

 

Reactions: Cheapskate207

Cheapskate207

The left one hangs a little lower

5 Year Member

Jan 12, 2020

761

541

113

Maine

Apr 3, 2020

#10

• Apr 3, 2020

• #10

A good trick to prevent the intake gaskets from slipping is to use threaded rod on the corners to guide the intake down. Then you start the other bolts and removed the threaded rod, replacing it with the correct bolts.

 

Reactions: 90sickfox, General karthief and JD1964

R

rockyracoon

10 Year Member

Nov 23, 2005

874

27

49

margate NJ

Apr 3, 2020

#11

• Apr 3, 2020

• #11

Yeah thats what I do I have extra bolts with the heads cut off and slots cut in for a screwdriver. Have the same for the upper as well.
Thanks fellas

 

JD1964

there is enough sticking out to grab on to

15 Year Member

Jun 28, 2013

3,427

1,518

194

Maryland

Apr 3, 2020

#12

• Apr 3, 2020

• #12

Run a tap through all the holes in the head and clean all the bolt threads till everything is spotless

 

Reactions: General karthief