MantisX620 Posted April 14, 2013 Report Share Posted April 14, 2013 Help me ratsun, I'm at wits end. Here's the whole story. My engine was leaking bad at the valvecover, fuel pump and disti pedestal. Fixed all 3 gaskets. Last time I tried to adjust my timing I noticed if I advanced all the way, I could only get around 12 btdc. So I decided to set the engine to top dead center to make sure the disti rotor was pointing at #1. It ended up a tad off from being on 1. So I said screw it and reinstalled the disti. Now the truck will turn over but will not start! If I turn it long enough, I'll hear a pop and ill see gas shoot out of the carb(weber 32/36) in a mist(took off filter). I've check and rechecked the firing order 1342 and nothing. What am I missing here? Truck started and ran fine until I fixed the leaks. Here are some pics of the current orientation. I'm placing #1 wire on the rightmost pedestal in my pic. Thanks MantisX Quote Link to comment
datzenmike Posted April 14, 2013 Report Share Posted April 14, 2013 Set TDC compression on #1 Pull dizzy cap. The wire just above the end of the rotor is now #1 plug. Arrange the rest 3 4 2 COUNTER CLOCKWISE.. Try starting with the dizzy twisted slightly counter clockwise (retarded) and adjust clockwise to advance. Quote Link to comment
TENDRIL Posted April 14, 2013 Report Share Posted April 14, 2013 (edited) i think your dizzy is 180 degrees out? welp or that^ Edited April 14, 2013 by TENDRIL Quote Link to comment
datzenmike Posted April 14, 2013 Report Share Posted April 14, 2013 It could be, but only if the oil pump were removed and the drive spindle fell out and was put in wrong. The only other way is if it's TDC but on the exhaust stroke. Quote Link to comment
MantisX620 Posted April 14, 2013 Author Report Share Posted April 14, 2013 Ok so here's an updated pic. Engine is at tdc. The rotor sits in between the bottom and right posts so I wasn't able to pick accurately. I chose the bottom post as #1 and did 342 counter clockwise. Still does the same spit. I sat the rotor cap as it would sit if it was installed. Thanks MantisX Quote Link to comment
MantisX620 Posted April 14, 2013 Author Report Share Posted April 14, 2013 Don't know if this matters but ill mention anyway. The front tires are on the ground, but the rears are on rollers so I can move the rear around for roo. In the garage. Would the truck sitting like this cause issues? Quote Link to comment
datzenmike Posted April 14, 2013 Report Share Posted April 14, 2013 Ok so here's an updated pic. Engine is at tdc. The rotor sits in between the bottom and right posts so I wasn't able to pick accurately. I chose the bottom post as #1 and did 342 counter clockwise. Still does the same spit. I sat the rotor cap as it would sit if it was installed. Thanks MantisX There are two TDCs You may still be TDC on the exhaust stroke. Lift the dizzy out and look at the drive spindle. It should look like this at TDC... Note that there is a smaller half on the left and larger on the right. Should be this way if you are correctly at TDC compression #1. Quote Link to comment
HRH Posted April 14, 2013 Report Share Posted April 14, 2013 An easier way to do that is if you draw a line out from the distributor drive spindle, it should barely go in between both of the mounting bolt holes. Quote Link to comment
Ranman72 Posted April 14, 2013 Report Share Posted April 14, 2013 pull number 1 plug put your finger to cover the number 1 hole rotate motor till you feel pressure coming out of the hole continue to rotate till you get to TDC this will be the compression stroke as mike said Quote Link to comment
MantisX620 Posted April 14, 2013 Author Report Share Posted April 14, 2013 Lined it up like the pic and tried, same result. Pulled plug 1 and stuck in a small rod to rest on the piston. Found tdc that way, same result. It's a pattern. Crack, crank, crank, pop repeat. Tried to rule out the fuel pump by unhooking it from the carb. Thought maybe it was broken during the gasket replace. Same thing. I dunno wtf happened to my truck but I wish I had let the son of a bitch leak all it wanted. Quote Link to comment
TENDRIL Posted April 14, 2013 Report Share Posted April 14, 2013 hmmm...is there a dual adjusment on this dizzy one being a 10mm the other 8mm. the 8mm one if its there is kind of hidden and that can give you another 10 or so degrees i believe..or is this just on the EI? Quote Link to comment
Datsun_SME Posted April 14, 2013 Report Share Posted April 14, 2013 I just had same problem when I pulled my engine. I put everything back together and tried to fire it up and pop, gas shooting out the top of my 38 webber dgas. My problem was that the PO had put an l18 distributor on an l20b engine. So the firing order was different. I switched it to l18 firing order and rum rum! first turn it fired up. maybe that's the problem Quote Link to comment
MantisX620 Posted April 14, 2013 Author Report Share Posted April 14, 2013 Tried l18 fire order this morning, same thing. Anyone in Durham nc area wanna take a crack at it? Could it be the carb? Brand new weber from redline maybe 5 months old. Quote Link to comment
TENDRIL Posted April 14, 2013 Report Share Posted April 14, 2013 it sounds like its retarded... does your diizy have the two bolts i said above? Quote Link to comment
MantisX620 Posted April 14, 2013 Author Report Share Posted April 14, 2013 Hi, yes it does. I have loosened both and turned the assembly clockwise. No result. Didn't try counter clockwise yet. Quote Link to comment
TENDRIL Posted April 14, 2013 Report Share Posted April 14, 2013 ok..try this the lower one is is inbetween 1/2 way and 3/4 dizzy turned counter clockwise upside down pic --------------------------------------------------------------------------------- now the top one about 3/4 turned clockwise ... this is at about 14 degrees BTDC assuming you have everything CERTAINLY where it should be... give this a shot Quote Link to comment
datzenmike Posted April 14, 2013 Report Share Posted April 14, 2013 Forget the fuel pump. Replacing the distributor and the valve cover gaskets means you had the wires off the plugs. So number one is to be absolutely sure you have the wires to the correct plugs from the distributor cap. The distributor can only be installed in one position. You can't mix up the timing if you removed the two 10mm bolts holding the pedestal to the timing cover. If you unscrewed the timing adjustment bolts to lift the dizzy out it should be still close enough to adjust back into position by twisting the distributor body. Did you remove any of the wires from the cap to clean or replace? Quote Link to comment
datzenmike Posted April 14, 2013 Report Share Posted April 14, 2013 Lined it up like the pic and tried, same result. Pulled plug 1 and stuck in a small rod to rest on the piston. Found tdc that way, same result.There are TWO Top Dead Centers. One on the compression and one on the exhaust. You can verify compression stroke by, (as said) putting finger in plug hole to feel the air coming out, removing valve cover and checking that #1 intake and exhaust cam lobes are pointing upward at 10 and 2 o'clock, or remove dizzy and look at the drive spindle. Quote Link to comment
MantisX620 Posted April 14, 2013 Author Report Share Posted April 14, 2013 With the pulley mark on 0, here is what I have on my cam lobes and disti. Mike, I checked and quadruple checked the wire order. I even got desperate and went completely around the disti moving them 1 post back and trying until I was back at original 1342 as depicted here: http://www.davidcmurphy.com/olddat/620tech2.htm Quote Link to comment
MantisX620 Posted April 14, 2013 Author Report Share Posted April 14, 2013 I don't get it. I feel like it should at least start even if it ran like shit. Followed tdc instructions as told put #1 where the rotor stopped. No bueno. Everyone is certain its timing? Anything else I can check for? Wish Honda made an old cool truck, I can work on that voodoo. Quote Link to comment
Sealik Posted April 14, 2013 Report Share Posted April 14, 2013 With the pulley mark on 0, here is what I have on my cam lobes and disti. Mike, I checked and quadruple checked the wire order. I even got desperate and went completely around the disti moving them 1 post back and trying until I was back at original 1342 as depicted here: http://www.davidcmurphy.com/olddat/620tech2.htm You sure you're at TDC? (0 degrees) Lobes should be at 10 and 2....not at 11ish/3ish Quote Link to comment
MantisX620 Posted April 14, 2013 Author Report Share Posted April 14, 2013 Ok fiddled with it some more and finally got it to crank. What's happening now is it will idle fine and rec fine, but at the end of the rev it cuts off. The starter lags on restart but eventually it turns over. I took my valve cover off and as I turn the pulley the left side of the chain is tight, but sometimes the right side has some slack. Timing chain job in my future? 1 Quote Link to comment
TENDRIL Posted April 14, 2013 Report Share Posted April 14, 2013 so what did you mess with to get it to fire? Quote Link to comment
MantisX620 Posted April 15, 2013 Author Report Share Posted April 15, 2013 I actually just found top dead center again and put the wires back on and adjusted it using the pics you sent. That was enough to get it started, then I timed it to around 15btdc. I can hear timing chain chatter so im sure ill be going in it soon. Thanks everyone Quote Link to comment
TENDRIL Posted April 15, 2013 Report Share Posted April 15, 2013 awesome man glad i could help! 1 Quote Link to comment
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