turbo280z Posted March 7, 2020 Share #1 Posted March 7, 2020 I just bought my 76 280z. I think there might be a problem with my brake booster it idles perfect until you press the brakes once you do so the car proceeds to drop in idle and sputter but not die all the way any suggestions? Sent from my iPhone using Classic Zcar Club mobile Link to comment Share on other sites More sharing options...
grannyknot Posted March 7, 2020 Share #2 Posted March 7, 2020 Sounds like a vacuum leak in the booster, unmetered air is coming in from the booster that the Air Flow Meter, AFM doesn't know about and can't compensate for. There some experts here that can walk you through the process. Link to comment Share on other sites More sharing options...
Patcon Posted March 7, 2020 Share #3 Posted March 7, 2020 Plug the line going to the brake booster with a bolt and clamp and see if that symptom stops Link to comment Share on other sites More sharing options...
Zed Head Posted March 7, 2020 Share #4 Posted March 7, 2020 That's a classic bad booster sign. If the engine is running a bit rich the idle speed will go up. Sounds like your engine is tuned about right so the idle speed drops. The boosters usually go bad when the master cylinder leaks. So watch out for brake fluid in the booster. It will drip on to your paint and stain it. Boosters are getting harder to find also. 1 Link to comment Share on other sites More sharing options...
heyitsrama Posted March 7, 2020 Share #5 Posted March 7, 2020 (edited) Power brake exchange in San Jose California can rebuild them, I had mine done by them; if you end up using them have them power coat the booster, they run it through a bead blaster, it should be an additional $20. im not sure if DIY kits are available... I wonder where PBE gets theirs.... Edited March 7, 2020 by heyitsrama 1 Link to comment Share on other sites More sharing options...
rcv Posted April 23, 2020 Share #6 Posted April 23, 2020 On 3/7/2020 at 12:32 PM, heyitsrama said: Power brake exchange in San Jose California can rebuild them, I had mine done by them; if you end up using them have them power coat the booster, they run it through a bead blaster, it should be an additional $20. im not sure if DIY kits are available... I wonder where PBE gets theirs.... Do you remember about how much you paid? Link to comment Share on other sites More sharing options...
Yarb Posted April 23, 2020 Share #7 Posted April 23, 2020 Just got mine back from them. Had no idea they offered powder coating. Man....... Link to comment Share on other sites More sharing options...
heyitsrama Posted April 25, 2020 Share #8 Posted April 25, 2020 On 4/23/2020 at 1:42 PM, Yarb said: Just got mine back from them. Had no idea they offered powder coating. Man....... dont go installing it on the car without painting it, its gonna look like $^!# after it starts to rust! Grab flat-black (at least thats what i like) 7776 rustolium and some primer. 2 coats primer, 3 coats of paint. Might even want to grab something that's resistant to brake fluid, (caliper paint?) powder coating is not. Link to comment Share on other sites More sharing options...
heyitsrama Posted April 25, 2020 Share #9 Posted April 25, 2020 On 4/23/2020 at 1:00 PM, rcv said: Do you remember about how much you paid? total w/ tax: $125.88 without powdercoating Link to comment Share on other sites More sharing options...
Yarb Posted April 25, 2020 Share #10 Posted April 25, 2020 Sounds about right. Link to comment Share on other sites More sharing options...
Parman
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