Elitedownunder Posted March 21, 2015 Share Posted March 21, 2015 Gday guys,I bought a 94 EA7 VMAC 4V 454 with a bent pushrod after being installed incorrectly. Now what I need to know is how to set the valve yoke and lash with a Jake brake attached as my book is for the factory Dynatard. Is it the same principle with setting the flywheel to TDC on compression on No 1 ( in/ex fully closed and No 5 on the rock) then turn the motor a full revolution to the next cylinder or do I go off the flywheel for the Yoke and only a full revolution for lash? Thanks Quote Link to comment https://www.bigmacktrucks.com/topic/39350-1994-ea7-vmac-454-valve-yokelash-with-jake-brake/ Share on other sites More sharing options...
Elitedownunder Posted March 22, 2015 Author Share Posted March 22, 2015 Help I am a new member from Australia. Quote Link to comment https://www.bigmacktrucks.com/topic/39350-1994-ea7-vmac-454-valve-yokelash-with-jake-brake/#findComment-283511 Share on other sites More sharing options...
Keffer inc Posted March 22, 2015 Share Posted March 22, 2015 I have an overhaul manual in my truck (which is locked inside the dealership currently) but I will try to find some info monday night if no one else answers. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/39350-1994-ea7-vmac-454-valve-yokelash-with-jake-brake/#findComment-283579 Share on other sites More sharing options...
Elitedownunder Posted March 22, 2015 Author Share Posted March 22, 2015 Gday Keffer, that would be great mate...anything would be appreciated. Quote Link to comment https://www.bigmacktrucks.com/topic/39350-1994-ea7-vmac-454-valve-yokelash-with-jake-brake/#findComment-283593 Share on other sites More sharing options...
wilbur Posted March 25, 2015 Share Posted March 25, 2015 There should be marks on the flywheel 120 degrees apart. 1&6 2&5 3&4 turn the engine to get on a mark. Say your on 1&6 check both cylinders to see which one is comp. one will be on comp one on overlap [one valve partially open one closed] if #6 is on overlap start with #1 and vica versa. Once get that just turn the engine CCW looking at the flywheel to the next mark 2&5 and adjust 5 and keep going in the firing order 153624 you should make 2 revolutions to set them all. Adjust the Jake at the same time as each cylinder. 0.021 Quote Link to comment https://www.bigmacktrucks.com/topic/39350-1994-ea7-vmac-454-valve-yokelash-with-jake-brake/#findComment-283995 Share on other sites More sharing options...
Elitedownunder Posted March 27, 2015 Author Share Posted March 27, 2015 Hi, guys on the same day as my last posting I went out and found a late model E7 book and trolled through it until I found rocker setup and went off it. After some priming she roared into life and hasn't missed a beat.But now the Electronic Malfunction light comes on and stays on? any guesses? It does nothing more then stay on but does not effect anything. Quote Link to comment https://www.bigmacktrucks.com/topic/39350-1994-ea7-vmac-454-valve-yokelash-with-jake-brake/#findComment-284279 Share on other sites More sharing options...
wilbur Posted March 27, 2015 Share Posted March 27, 2015 Turn the cruise off and hit the resume button. That will flash a code. This will tell you the problem Quote Link to comment https://www.bigmacktrucks.com/topic/39350-1994-ea7-vmac-454-valve-yokelash-with-jake-brake/#findComment-284293 Share on other sites More sharing options...
Keffer inc Posted March 27, 2015 Share Posted March 27, 2015 Sorry elitedownunder, I forgot all about the book, my dealer still have my truck too, which the book is inside of. See what code you got, example would be like it flashed 3x paused then flashes 5x, that means you have 3-5. Lets us know what it actually is, we can tell you. Quote Link to comment https://www.bigmacktrucks.com/topic/39350-1994-ea7-vmac-454-valve-yokelash-with-jake-brake/#findComment-284326 Share on other sites More sharing options...
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