lifters leaked down ?

[96baylinercapri]

My 96 3.0 LX was stoted for two years when I started it was missing and making real bad top end noise. I removed the valve cover to find the front two push rods far from the rocker arms (about a 3/8in )all of the others clearance were ok. I ran the engine the front two were not opening the valves at all. I tightend the rockers down the 3/8in and the miss and noise stopped, but there is no oil being pumped up the push rods. Could both of the lifters have leaked down and be stuck down

 

[Haut Medoc]

Re: lifters leaked down ?

Welcome to iboats, I would think they could. I would pull out the offenders, and see whats up. Disassemble if you need to......If they come unstuck you will be smacking the tops of your pistons & then you will get a different noise.....How was the oil pressure? You should see oil getting pumped up there......JK

 

[96baylinercapri]

Re: lifters leaked down ?

The oil pressure was at about 40psi. I had to order the lifters, I've recived them but have not had time to put them in,maybe this weekend.

 

[Peter J Fraser]

Re: lifters leaked down ?

Unless you have a new or reground cam to install as well you will destroy your new lifters and cam in very quick time.<br />You can't replace lifters only on a worn camshaft.<br />Do as J.kopec suggests but note where each lifter comes from and don't mix up the components if you dismantle any.<br />Reassemble back to ORIGINAL position unless you have obvious damage to the lower face.

 

[TilliamWe]

Re: lifters leaked down ?

peter, I thought it was not used lifters with new cam. I understood you could replace a lifter & not ruin an "old" cam. Anyone???

 

[Buttanic]

Re: lifters leaked down ?

peter, I thought it was not used lifters with new cam. I understood you could replace a lifter & not ruin an "old" cam. Anyone??? <br /><br />Either way it's a gamble. Pay me now or pay me later. Just replaced cam and lifters in a friends truck because he put new lifters on an old cam. Lasted about 5000 miles.

 

[ron7000]

Re: lifters leaked down ?

read tech articles at cranecams or compcams or other valvetrain maker.<br /><br />For non roller lifters, you cannot reuse old lifters with a new cam. If you get a new cam, you need new lifters.<br /><br />You can always replace lifters whenever, however you need to properly install them and break them in.<br /><br />If there was 3/8" (0.375") slack between the pushrod end and rocker, then that leads me to believe the rocker was adjusted before it was stored. I don't think a collapsed lifter drops that far, more like 0.060" when it collapses. Or you have bent pushrods. Who maintains the boat, and what was done prior to storage?

 

[whywhyzed]

Re: lifters leaked down ?

never reuse lifters...they're $3 each for chevs.<br />if you do reuse them, get them back in their original bores

 

[Buttanic]

Re: lifters leaked down ?

Either way it's a gamble. Pay me now or pay me later. Just replaced cam and lifters in a friends truck because he put new lifters on an old cam. Lasted about 5000 miles.<br /><br />He properly broke them in, cam lube, 2000RPM for 30 minutes. Still failed. It's not a question of will it fail or not just a question of when. It's your money, gamble if you want to. If you have enough time to do it twice you have enough time to do it right.

 

[Peter J Fraser]

Re: lifters leaked down ?

I'm not going to enter any argument here. I've seen some instances where new lifters were placed onto an old cam and 'POOF' the're gone.<br />It all depends on the condition of the faces and that is open for many interpretations.<br />My opinion only.<br />Good luck either way.