I have a 1992 GMC Sonoma 4.3 liter, it does not start and has a brand new battery in it. So I went to take the starter off and I couldn't get the bolts off. I think they are rusted on, they will not budge. I tried using a bigger socket wrench then I tried using to impact wrench and I sprayed it with wd40 and it still will not budge. Please help, What do I do?
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Rusted Bolts
- Thread starter bpick3
- Start date
vetteonr
New member
WD40 is not a very good penetrate. For minor stuff, maybe, but you need something like PB Blaster. Spray it several times and let it work. Take your time. Be careful here, you can use pry bar on your socket handle for more leverage, but don't try to muscle it off. If you snap the bolts off in the bellhousing, then you've got problems. Good luck.
drwet
New member
That's a tough place to use a torch. Burning down your truck can ruin your whole day. And you're going to need an acetylene torch. Propane won't cut it. Its best if you can point the heat at the block where the bolt goes in. Sometimes heating it and hitting it with cold water will shock it loose. If you have time I like letting the penetrating oil work for a few days. Keep reapplying it and trying the bolt. Whacking the bolt with a hammer from time to time will help too.