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The other day I was driving my truck and the pedal went to the floor with almost no braking power. I tried to bleed brakes, but got almost no fluid out of any of the lines. Could this be a bad master cylinder or brake booster?

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1974 Mikado 4x4 50,000 orig. miles

Most likely the master.

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OK, I'm over it. Where's the beer?

Yes, just the opposite if thebooster goes out, high, firm pedal. If you aren't losing fluid, it is the MC. Check NAPA.

Found a master cylinder at pick n pull. Pedal on that truck felt good. $12. Brakes now work great. Thanks for the help!!

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1974 Mikado 4x4 50,000 orig. miles

Make sure you bench bleed the replacement master before installing it, check the length(& adjust) of the piston rod, make sure when you bleed the brakes the engine is running to maintain vaccuum to the booster & prevent damage to the new master.

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'78 Chevy LUV,1.9,4sp,headers,31's,SAS Dana 30,Dana 20,SOA rear w/Aussie Locker, rough body, bought new 12/4/78.
'87 Trooper,2.3,5sp,headers,31's,ball joint flip & spacer,Aussie Locker rear,Superwinch hubs,brush guard w/5.5K winch,more to come.

Uh oh, I didn't do any of that. I just stuck her in and started bleeding. Crap! I really didn't know anything about having the engine running while bleeding. Hopefully I didn't damage it.

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1974 Mikado 4x4 50,000 orig. miles

I've never had the motor running when bleeding brakes. You can "bench bleed " on the truck. Have someone pump the peddle and just bleed it by cracking the lines you screwed into it. I would do that to make sure there is no air trapped up there.

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OK, I'm over it. Where's the beer?

Raidersadie, which pick n pull did you get that brake booster from. I have been to the one in Chico, and the selection of pre 1990 vehicles is getting pretty bad.

Mike

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1980 Luv Mikado 2wd stock
1995 Ford F150 XLT 4X4

Oroville Self Serve Distmantlers on Feather River Blvd. They have an 82 4x4 and a 78 4x2

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1974 Mikado 4x4 50,000 orig. miles

Ugh i keep for getting to get up there.... Body parts any good?

A couple fenders are ok. The beds are crap, bumpers crap, windshield good. Mostly engine compartment stuff and drive train. Interiors completely shot. There is an 86 isuzu trooper with a 5 speed and 2.3.

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1974 Mikado 4x4 50,000 orig. miles

That 86 Trooper has the 5sp that will fit your truck as well as the power steering and front upper control arms.

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1978 pro street step/side 455Buick, 4sp,4.11s, 31/18.5s

You are absolutely correct my friend. If I had the funds I would rape and pillage that trooper. One thing I don't understand is, why do I want the upper control arms? What is the benefit of this?

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1974 Mikado 4x4 50,000 orig. miles