93ej2civic

Okay so just bought a 94 civic ex with a d16z6 180k miles all original. Guy said he was driving and it just shut down and wouldn't start back up. I checked the compression and the results were 25 0 0 and 25. There's no noise when you turn it over the cam is moving along with all the rocker arms. What could've went wrong? Any suggestions appreciated I just wanna know what I could be looking at here. I've never seen anything like this happen before so I'm clueless

eghatch9295

iTrader: (1)

timing off

93ej2civic

I was initially thinking that but it is in time

eghatch9295

iTrader: (1)

how did you check it? all you said is the cam moves

93ej2civic

I lined the timing Marks up on the crank and it was in time up top. So it's not that

93ej2civic

Well I found the problem. Every single exhaust valve in the head is burnt. Never seen that before how does that happen?

NotARaCist

iTrader: (1)

Abuse, neglect, or a **** tune. Most likely all three.

93ej2civic

Factory car all that it has is a short throw shifter.

tony_2018

Wow.....

If running lean could cause this type of issues, how would the y5 and the d15z7 engines react to running lean? They were built to run lean but if valves start to get burnt I might have to take my head off and inspect the valves.

93ej2civic

So I've done this before but I can't remember for the life of me how to get to the tensioner bolt without taking the crank pulley and timing cover off can someone enlighten me?

NotARaCist

iTrader: (1)

Little rubber plug. Just pull it out of the timing cover.

93ej2civic

Thought so just wasn't exactly sure. Do I need to move any of the a/c components? My previous civic didn't have a/c so another thing I'm unsure of thanks

eghatch9295

iTrader: (1)

belt

93ej2civic

Thanks for the help. Should have it up and running by this weekend. Flipped my last one so trying to restart from stock

93ej2civic

Okay well compression issue fixed it's 160 across the board but it's back firing out the intake like it's out of time and I can't find a **** that I can understand about the crank pull and timing marks which one do I line it up to when putting the timing belt back on. The 3 or the 2 marks?

Former User

Is one of the "2 marks" painted white? If so, use that one.

93ej2civic

Yeah one is white but every time I put it on that one It won't even hit. Any variation between and it hits but won't run.

Former User

Make sure the cam pulley is also at TDC1 and remains there after two crank pulley rotations counterclockwise. See diagrams.

93ej2civic

There's my problem. How do I keep it from coming out of time when I rotate it?

Former User

Position the cam and crank at TDC1. Without moving the pulleys, install the belt first on the long left side (between 1 and 4 in top diagram) without any slack. Then tensioner, water pump and back to cam. Afterwards, be sure to tension the belt as per service manual instructions.

Always rotate crank pulley ONLY counterclockwise.

93ej2civic

Is there anyway for me to do it without taking the pulley and cover off?

NotARaCist

iTrader: (1)

The pulley has a TDC marker on it, too. Line it up with the marker on the timing cover.

Former User

Given your timing problems, remove the crank pulley and do it right.

93ej2civic

Okay so here's the deal. Lined up the cam and crank pulley. Put the belt on and turned the motor counter clockwise. Every time I line it up and turn the pulley the crank moves off TDC before the cam ever moves

Former User

Sounds like there's 1 tooth of slack at the first step (installing belt between 1 and 4).