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Re: won't start after intake gasket replacement
Ase mechanic here. this has happened to me too, try checking your wiring again, it is very easy to mix up the back three cylinders. and on the coil remember number six is the middle coil. from left to right its 523614
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Locate the thermostat intake tube by following the radiator
hose from the radiator to the point where it connects to the VR6's
intake. Remove the intake tube bolts with a 10 millimeter wrench. Lift
the intake tube of of the manifold and push it to the side to expose the
Pull the old thermostat out of the intake manifold and
replace it with a new one. The thermostat sits on a lip that is below
the radiator fluid level. There will be an arrow indicator showing which
end of the thermostat must stick out of the manifold.
Remove the old thermostat gasket and replace it with a new
one. The old gasket can be removed with our fingers but in some cases a
scraper may be needed to free the gasket from the surface of the intake.
Bolt the thermostat intake tube back onto the manifold of the Volkswagen.
put in time and remove valve cover, front engine cover, timing belt ,exhaust at manifold, intake manifold and remove head bolts, pull head clean all surfaces replace gasket after head ck for cracks follow specs on bolts and put back together in a shop in would take about 4 to 6 hrs to do .
Push rod,you have two different size,or firing order is wrong. The intake push rod are 5 3/4 inch long, the exhaust are 6 inches long,Disable the spark and crank the engine the sound should be smooth and even,if its not correct the push rods.If it is correct the firing order
It sure could be. But, first...by "won't turn over" you do mean it cranks at normal speed but won't start? A simple test of the fuel pump is to stand by tank and listen as someone turns key to on. When first turned to on, your pump will activate for 2 or 3 seconds, pressurizing the fuel system, and then shut off if the engine computer doesn't get a cranking signal. Do you hear it come on? If not, then something's not turning your pump on. If you can hear it buzz on briefly, then maybe it's your filter. Another test: Spray a little starting fluid into your intake manifold (remove the big hose going into intake manifold) while someone tries starting it.If it doesn't fire and try to stay running, then it's probably an ignition problem. But if it does fire off, then you know it's a fuel problem-likely your pump or filter. good luck.
If the RPM's are going pretty low to where the car seams like its about to die, then it could be a vaccum leak. Whick could be cause by a bad gasket or something maybe didnt get sealed right when putting everything back together. If you do decide to change the gasket, i would recommend the "Hondata Intake Manifold Gasket". Its thicker and not made from metal and also keeps your intake manifold cooler.
The 5.0l and 5.7l all have this problem at some time.The lower intake gaskets are bad.and are sucking air which will cause the eng. to idle high and sound like like there is a cylinder or two that are not firing and you also may loose antifreeze.The upper intake is black/plastic and the lower is aluminum.Tightening the lower intake bolts may seem to help but once the gaskets are blown,they need to be replaced.If its sucking more air through the bad gasket than the TBI it will not get the right air to gas mixture.Check that all vacuum hoses are in good shape and the vacuum line that runs from the top of the upper intake to the brake booster is sealed good in the intake.Hope this gives you a better idea.