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Brake peddle feels like your are stepping on a pop can at times

Tiny
FIREMNTED
  • MEMBER
  • 1996 BUICK REGAL
  • 191,000 MILES
Peddle is hard for a few seconds and them goes to normal. I have checked for a vacuum leak an none!
Saturday, July 7th, 2012 AT 2:00 AM

8 Replies

Tiny
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  • MECHANIC
  • 52,797 POSTS
Could be a bad booster or the master may be bad. Does the car stop ok?

Roy
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Saturday, July 7th, 2012 AT 2:03 AM
Tiny
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The car stops o.K. It does make a strange sound when I start it in the morning sounds like a linkage binding and the peddle fades about half way but it only does this when I start it and put it in gear with in 20 seconds!
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Saturday, July 7th, 2012 AT 2:06 AM
Tiny
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You may have a master cylinder issue. I would have this checked asap to avoid loosing the brakes and putting yourself in danger

Roy
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Saturday, July 7th, 2012 AT 2:08 AM
Tiny
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I did a little more looking and fond a small vacuum leak and that seems to have fixed it! But now The lifters are making noise! I have 4000 Miles on the rebuilt engine I had the cam checked before I reused it and was told there is no reason to replace the lifters! The oil light does not come on so I do not believe the oil pump went. I did rebuild the pump with the engine! Any ideas?
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Sunday, July 8th, 2012 AT 12:57 AM
Tiny
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Do a manual oil pressure check to verify the actual pressure.

Used cam? New lifters? Not normally done as they are a matched set.

Lifters are a common failure in these motors. I would have replaced both if I were rebuilding the motor.

Did you do the main, rod bearings and cam bearings in your rebuild?

Roy
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Sunday, July 8th, 2012 AT 1:28 PM
Tiny
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I put a crank kit in it. I had the machine shop check the cam and lifters they said the cam liked like new and there was no reason to change the lifters> the block was boiled so new cam bearings. What about a stuck check valve in the oil filter I just changed It last weekend?
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Sunday, July 8th, 2012 AT 3:21 PM
Tiny
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This is the same 3800 I was working with you on a few months ago with the rough Idle at start up I replaced the MAF sensor because the top was cracked!
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Sunday, July 8th, 2012 AT 3:24 PM
Tiny
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Do you know what the oil pressure should be at Idle I got 70-75 PSI
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Monday, July 9th, 2012 AT 10:35 PM

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