blown spark plug issue on intech v8
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blown spark plug issue on intech v8
I was wondering if the blown spark plug issue is also common to happen on 5.4L 4v intech v8 engines? I thought this is only an issue with the 3v (or 2v) triton engines.
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Fleet Mechanic
Joined: Feb 2011
Posts: 1,812
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From: Thousand Oaks, CA
Any engine with aluminum heads and steel spark plugs without inserts can blow a spark plug.
The older Triton 2v heads only had 4 threads so were more prone to it.
There are reports of blown plugs in newer design heads, but much reduced.
The main issue is that aluminum and steel have different expansion factors from heat.
The pulsing pressure from compression strokes just makes it worse.
Leave the plugs in long enough and they will work loose.
Torque the plugs properly, change them regularly and there shouldn't be any issue even with the early heads.
The older Triton 2v heads only had 4 threads so were more prone to it.
There are reports of blown plugs in newer design heads, but much reduced.
The main issue is that aluminum and steel have different expansion factors from heat.
The pulsing pressure from compression strokes just makes it worse.
Leave the plugs in long enough and they will work loose.
Torque the plugs properly, change them regularly and there shouldn't be any issue even with the early heads.
Fleet Owner
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No, the 4-valve engines use different heads and thus do not have the spark plug blow out issue.
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51phil
1948 - 1956 F1, F100 & Larger F-Series Trucks
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May 30, 2011 06:31 PM
