Brakes on wifes gasser ..

[Tapage]

Hello all .. just to ear comments about this ..

Yesterday I took wife gasser for a spin and tune up .. measure plug wires, oil and regular stuff ..

Note that the pedal sometimes and aleatory goes a bit lower in the first press .. it always brakes just sometimes it does at the regular right height and others a but lower ..

Check all the wheels and bleed 'em .. I maybe ( not sure ) got some air from the right ( pass side ) rear, but not that much anycase ...

Nothing in the others .. then another spin but the issue is still there ..

I don't bleed it again .. but can be the brake master cilinder ? ( IMOP yes .. )

Re thinking about that .. it happen ( lower brake pedal ) mostly when the brake isin't used in a while .. means if you press now and again in 30 segs or min .. it works just wright ..

And as a bonus here are my wire plugs numbers in ohms .

1. 7.29
2. 8.99
3. 12.90
4. 12.03
5. 15.73
6. 17.27

thanks All !

 

[Ebag333]

Note that the pedal sometimes and aleatory goes a bit lower in the first press .. it always brakes just sometimes it does at the regular right height and others a but lower ..

Re thinking about that .. it happen ( lower brake pedal ) mostly when the brake isin't used in a while .. means if you press now and again in 30 segs or min .. it works just wright ..

Well, trying to decode your post....

Does the rig have ABS? Some people have reported that they have not had luck bleeding the brakes until they get a dealer to activate the ABS while bleeding (expensive special tool). Air can get in there, though it's not been common.

My best guess would be leaking hard or soft lines (more likely soft lines), or a leaking bleeder. Air is being slowly introduced into the system somewhere. Unfortunately, that's the worst type of scenario as it can be virtually impossible to diagnose.

I'd start with bleeding the system again, but do it in reverse order (closest to the master cylinder to the farthest). The reason being that you want the brake fluid moving as little as possible (opposite of the reason for the FSM recommended way). Pay special attention to any bleeders that have air come out of them.

Hopefully one line spits lots of air and the others are clear (or relatively clear). That would narrow it down quite a bit.

Also follow the brake lines and look for any brake fluid, worn spots in the line, bulges, damaged lines, etc. If it has a slow leak, you might find some brake fluid on or around where it's leaking which would help you find the point.


As you already mentioned, it could be the master cylinder. But I would think that would give you a soft pedal all the time, rather than a soft pedal only if it's not been used for a while.

HTH

 

[Tapage]

Appreciate your advice ..

Actually it's a non ABS 80 .. so ( and I wish ) it could be easy to bleed .. I will try it another shot in a bleeding sesion ..

And I will do in reverse as you suggest .. I check all the lines and even the rear cilinders ( it's a rear FF with drums ) and all looks really clean and dry .. but I will report new data with reverse bleeding ..

thanks again dude ..

 

[Tapage]

one extra question in the same topic .. in the bleeding sequence I need to add the LSPV .?

 

[OGBeno]

one extra question in the same topic .. in the bleeding sequence I need to add the LSPV .?

Yes, include the LSPV. All four corners, starting from the brake component farthest from the master cylinder working forwards.

 

[Tapage]

Yes, include the LSPV. All four corners, starting from the brake component farthest from the master cylinder working forwards.

I will bleed the LSPV after both rear wheels ..