tuff time starting my yota

[bikerider]

  ive asked this question once before but since there where no replies at this forum and the others ill try asking again cause im still have the same problem when tring to start the motor either cold or hot it turns over but never cranks but for some reason i can remove the oil cap and try it and it starts with no problem and it does this at least one week outa every month and nobody seems to know why and of course when i take it to the shop its working fine please help if you gota guess ill check it out ive got a 90 4runner v6 3.slow it doesent seem to much of a problem cause it always starts after removing the cap but can this lead to bigger problems or is it a sign of a big problem any help would be great thanks alot

[chevyLUVtoyota]

PCV valve

[chevyLUVtoyota]

opps check your PCV valve. You should be able to blow out but not suck in. If you can both ways...then its shot. Then just go get a new one. Its not letting your bottom end breath. Its vapor locking your motor.

[bikerider]

thanks alot about the best reply  ive had from a couple of forums  have a good one

[chevyLUVtoyota]

yup have a good one did it work??

[RHG]

ya thats the best bet, pcv. Im not too familiar with the v6 but do they have a valve cover breather too? If so, check that too.

[BLACKDOG]

they've got a valve cover breather, but that shouldnt be a problem, check the pcv valve, like they said

[bikerider]

i think i found the problem aleast i hope ill know by tom. when the part comes in
couldnt get to the pcv valve to check it but there was a ventilation hose on the other side going to the air cleaner that had a huge crack on the back side  so ive ordered a new one from the dealership 13 bucks not bad considerng its from the dealership but thats where the gas smell is comen from after the truck has been shut off for awhile and i havent had that not wanting to start problem in awhile but that always comes and goes but if it doesnt come back then thats what it was so i hope but if it does come back it wont bother me cause im still getting a rebuilt thanks for the help im confident that you nailed the right area atleast ill let ya know for sure thanks again

[bikerider]

found a huge crack in one of the ventilation hoses leading to the air cleaner where i was smelling the gas fumes the most so i think that that might be it ill let ya know when the part gets here tom. thanks alot for the help im still not sure if that will stop the not wanting to start problem but i bet it will

[bikerider]

there was a ventialtion hose next to the oil cap that had a large split down the back side  so i got a new and no problems starting at the moment so i think ive taken care of that one i hope thanks for the help

[bikerider]

the pcv valve was it it had a large crack on the back side thanks alot

[chevyLUVtoyota]

anytime .......have a good one