Tools for Sale

Click to Browse Tools

Sales 800-524-9783

Mon-Fri. Sales 10am - 5pm Eastern Time or order on-line anytime.
Call with questions on application.

ATD Tools

Baum Tools

Calvan Tools

Rescue Bits

Time Sert

Win Tools

Thread Repair

Advice? 800-524-9783 x251

Ford spark plug thread repair kit advice

10:10 am Ford Problems, TIME-SERT Kits

Since you’ve found this page, chances are you’re either a Ford owner with a spark plug blowout problem or a mechanic (possibly a shop owner) looking for the best fix for his customer that has a Ford spark plug blowout issue. As you’re finding out, there are many choices and… many prices! Parts stores have the quick temporary fixes. We’ve been helping to make sense of spark plug thread repair options since 2005. We get calls frequently on Ford spark plug thread repairs questions. First time repairs, second time repairs and yes even 3rd or 4th time repairs! Ninety nine percent of the time our kits can fix spark plug threads when others have failed. And when parts store quick fixes fail, they end up making the hole even BIGGER. Read on for more information on permanent spark plug thread repairs or call us for personal assistance in choosing the correct kit for your situation and particular vehicle at 800-524-9783.

We’re not locked into selling just one brand. We have several to choose from depending upon the application and the size hole being worked on. The most common spark plug thread problems are with Ford 4.6, 5.4 and 6.8 SOHC (Single Over Head Cam) engines. So that’s mainly what we’ll talk about here today, but we also have solutions for other applications too. Some customers that are on a tight budget call to order just the inserts. The inserts are the threaded bushing that have threads inside for the spark plug. The outside is also threaded that screws into the cylinder head. A common misconception is that there’s no special tools needed to make the threads in the cylinder head to accept the insert. Some guys think, I have a tap and die set already. Or it will just screw in without any preparation. It’s true that a parts store insert sold as a Dorman product self taps. But that fix is really just temporary at best. We get a lot of calls for oversize repairs after the Dorman has done more damage. See our product listing for the most affordable repair which has an excellent track record, it’s the Calvan 38900-1. It works for 4.6, 5.4 and 6.8 SOHC (Single Over Head Cam) engines. Which reminds me. A few times over the years, I’ve had customers think that they could not use the Calvan kit because they thought their engine was a DOHC (Double Over Head Cam) but really had a SOHC (Single Over Head Cam). They thought that since they had two cams it was a doule or DOHC. However they did not have two cams per head. They just one per head which makes it a single overhead cam. So to clarify, a DOHC engine means TWO cams per cylinder head. SOHC means ONE cam per cylinder head.

When dealing with oversize repairs; for cases when a parts store repair has failed, we try not to go any larger than needed. So another common response when I ask how big is the hole? Is that they say it’s M14x1.25. Well that’s the size of the spark plug and therefore the inside of the parts store insert. That is unless you’re talking about a Dorman repair. Dorman uses an M16x1.5 no matter what the application is. And that’s messed up! When I ask what size is the hole, what I’m trying to find out is; what the size of the hole is now after a previous repair has made the hole bigger. Save A Thread Helicoil inserts as well as many other parts store inserts measure .66″ Calvan measures around .74″ so it’s big enough to do repairs when a parts store temporary repair has failed making the hole larger. In rare cases when there’s been a compression leak on the outside of the insert, the holes can be elongated or egg shaped. In those cases the Time Sert 5600 is the best chance to save the head. Cases where the insert blew out without having a compression leak for an extended period, the Calvan works well. Calvan even has a .85″ lip on top that helps seal in extreme cases. When purchasing from us we can email tips upon request that answers a lot of common questions we’ve had over the years. Remember we don’t sell on other sites so this offer is only good at and One person was upset recently with us because we would not email our free tips after he made a purchase at Amazon! Our tips are for our customers only. We also have the tap e-clip for the Calvan kit which is a safeguard that prevents the tap from falling into the cylinder if threaded too far. We offer the free 389-4000 leak tester with the 5600-389-4000 Time Sert kit. Again another benefit when purchasing from us. Want more info on this problem? Call 800-524-9783 x251 or see the links below.

Ford Spark Plug Blowout – Solved

Calvan 38900 Thread Kit

Time Sert 5600-3890-4000

Comment Below, Please Unlock Caps

Tell us your thoughts or ask a question. For best results please provide relevant details like your vehicle's year, make, model, engine size, the problem and when it occurs etc. - Comments need to be approved before they are seen by everyone. Notice we don't post Spam. Comment below (*SPAM, ALL CAPS & unrelated comments will be deleted). Click the following to view Dennis' "about page" for info on his background in automotive repair.

Please note: Your comment will not be posted until it's approved. We appreciate and read all on topic, relevant comments. Please don't ask for repair manual info like torque specs, wiring diagrams and specific repair procedures. If quick assistance is needed with purchasing a tool or part, please visit our tool website or call to place an order at 800-524-9783. *Note we don't offer repair advice on the phone.