Intake cracked. Hydrolock
11-06-2008, 03:47 PM
#1
1st Gear Member
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Join Date: Aug 2007
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Posts: 62
Intake cracked. Hydrolock
It FINALLY happened to me. Two days ago my intake cracked so i tried driving it home. I was about 3 blocks away when out of nowhere it just died. I tried starting it back up but nothing. I saw fluid coming out of my exhaust so i was scared it might have gotten hydrolocked somehow. Is this possible?? I havent done anything else to it and its just sitting now. I tried searching for answers but none mention hydrolock.
11-06-2008, 04:15 PM
#4
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Join Date: Mar 2007
Location: Where gunshots are more common than birds chirping
Posts: 504
Cracked intake would let in too much air after the MAF making it too lean and hard to start probably. If you hydrolocked, it would be exactly like it sounds. Your motor would lock up completely.
11-06-2008, 04:19 PM
#5
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Join Date: Dec 2006
Location: Saint Augustine, FL
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If the intake cracked in a manner that allowed coolant to get into the lower plenum then it is likely the plugs are fouled with coolant.
Do NOT continue to try to start the engine. Anti-freeze is a horrible lubricant for metals and you can damage the rings by turning it over;
Also, do NOT wait too long to get the problem fixed. Engine coolant is 1/2 water and it can create all sorts of corrosion and other problems in the cylinders;
Do get a new intake manifold, new spark plugs, and change the oil (and filter) before starting the engine--I would also change to oil and filter again after 100 to 200 miles, but I'm **** about stuff like that;
Do NOT continue to try to start the engine. Anti-freeze is a horrible lubricant for metals and you can damage the rings by turning it over;
Also, do NOT wait too long to get the problem fixed. Engine coolant is 1/2 water and it can create all sorts of corrosion and other problems in the cylinders;
Do get a new intake manifold, new spark plugs, and change the oil (and filter) before starting the engine--I would also change to oil and filter again after 100 to 200 miles, but I'm **** about stuff like that;
11-06-2008, 04:28 PM
#7
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Oh and then after getting the engine hot take it out a drive on the highway for 15 to 20 miles to bake out the remaining crap. You can do the followup oil change after this...
11-06-2008, 04:41 PM
#9
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Join Date: Dec 2006
Location: Saint Augustine, FL
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You could do nothing if you are going to get to it in a couple days, or if you want to do something proactive you could pull the plugs and put an ounce or so of engine oil in each cylinder, then pull the fuel pump fuse (fuse 14 in the under hood box) and turn it over for 4 or 5 seconds.
There shouldn't be much oil spray, but I've never done this on a 4.6L mustang--you may want to put some old towels or something over the plugs holes just in case.
Put the new plugs in, and make sure you torque them properly...
There shouldn't be much oil spray, but I've never done this on a 4.6L mustang--you may want to put some old towels or something over the plugs holes just in case.
Put the new plugs in, and make sure you torque them properly...
11-06-2008, 05:00 PM
#10
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Join Date: Aug 2007
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Good point i was going to replace the spark plugs anyway. Ill get right to it thanx. One more thing i remember something about spark plugs blowing out if you dont install properly. Do You happen to remember what cylinder that was just as a precaution or if its all cylinders??