NO compression ANY cylinder Toyota T100 w 3.4L

[dgmenace]

Hello. I'm new to this group and hope you all can help me out. My 95 Toyota T100 with 3.4L v6, it sat for two years and was running when parked. When I tried to crank it after sitting it sounded like no sound I have ever heard on an engine before...almost like starter was turning over but engine wasn't and it wasn't a very fast cranking either. My first thought was timing belt broke but it wasn't. In fact both cam marks and crank mark was perfect on mark with #1 at TDC. I then did a compression check and had nothing on any cylinder, zero! Never had this kinda situation. I have rebuilt older V8's like a 318, as well 2.2L and 2.5L front wheel drive engine. I haven't rebuilt a double overhead cam v6 before though. I was planning on doing a leak down but don't have the tool but can borrow one. I did check both compression gages and they are fine. One had the quick connect so I decided to connect to 20psi regulated air to see if I could hear the air and on LH side I couldn't hear air going anywhere on the 3, on RH side I could hear air going into the plenum on all 3. I still, even if the RH side head gasket is blown or intake valves stuck....I don't understand why I still have no compression on the other head? I hope this makes sense. I did crank over for a while and put oil in cylinders. Any suggestions or if you know what's wrong, please let me know. I have invested way too much in truck not to fix this. Thank you in advance.

[Steve W.]

It has likely sat long enough for the rings to get stuck. Dump some
transmission fluid into each cylinder and crank it over a few times.
Repeat that and see if the numbers start coming up. If they don't you
could try spraying a bit of starting fluid in while cranking it to see
if the heat from the ignition might loosen them up. Once you get it
running a bit they may all free up once the engine heats up.

--
Steve W.

[dgmenace]

Thank you...someone else mentioned the same thing....I just can't imagine both head gaskets are blown, or all valves or stuck....the rings I can actually see that. I'll give it a try

[dgmenace]

I ended up working on my Jeep today....3wks ago, my Rodeo, Jeep, and T100 was all down...smh. I got my Rodeo fixed, now working on brakes of my 95 JGC Limited with 318. I have a 97 JGC with blown 4.0l...sure would like to know how difficult it would be to put that 318 in the 97? Sorry, I know this wasn't related to the T100...just got my hands full with these vehicles. Thanks again for replying.