MegaSquirted GM V6 in Datsun Roadster
3.4 Liter GM V6. 3X00 Top end. 11:1 Compression on Pump Gas. MegaSquirt II
V3.57, MSExtra code 2.1.0. About two feet of Exhaust pipe from the custom headers. Just
enough to house the O2 sensor.
3.4l gm infamous engine ticking, noise
well i found this out about 1yr and a half ago when my rear one started in,
but heres the site i found the info on, and ?'s just ask
3100 Engine Rebuild
Rebuilding a 3100 V6.... Repair cost was $1,200 using Re-man cam and crank.
GM 3100 V6 rebuild (3.1 litre)
2012-03-06 : Rebuilt GM (Chevrolet) 3100. New main bearings, rod bearings,
camshaft bearings, piston rings, head gaskets, valve cover gaskets, EGR
gaskets, intake gasket, plenum gasket, Exhaust manifold gaskets, valve stem seals,
thermostat, oil pan gasket, oil pump, water pump, oil filter, engine oil,
I neglected to include piston rings in the audio, but the engine does have
the new rings.
GM 3400 / 3100 3.1 3.4 Engine Misfire Cause & Causes Miss Missing P0303
Here is a video for fellow GM 3400 & 3100 liter engine owners. Have a
misfire? This video explains the causes for what could be causing the
problem. Mine showed up as a P0303 cylinder 3 misfire. Couldn't figure it
out, but finally did. The spark plug and wire were replaced along with a
new coil. Could hear the injector firing with a stethoscope but still had
the miss. Found out after tearing into the intake that the lower intake
If your car is missing out, first try the following. Check for spark and
check the spark plug, wire and coil. A test you can do if it randomly
misses is in the dark, spray a mist of water around the plug wires. If you
see blue arcing, you've found the problem. But be careful not to zap
yourself, IT HURTS!
If the spark is good the listen at the injector. Is it firing and
clicking? If not, you've found the problem.
If both those seem good, then check for compression. Do this with a
compression tester available at any Autozone with the loan a tool program
If all 3 of those check out then it's a possible vacuum leak. May be time
to do an intake manifold gasket repair as they are known to go out. But,
if you do have to do an intake manifold gasket fix, go ahead and replace
the head gaskets too. You'll be glad you did. Not fun taking it all back
apart again. Check out my youtube channel for these videos both on doing
the lower intake manifold gasket and the head gasket.
Got questions about this engine? Leave a comment in the section below and
I'll try to help!
3400 GM Engine 3.4 Liter Motor Explanation And Discussion
Opening up a discussion and repair blog on the 3.4 Liter GM Engine. GM put
these engines in a lot of their cars and minivans. They're relatively good
engines after a few repairs. Problems, fixes, links to repair sites, open
it up for whatever, feel free to post & comment.
3.4 Liter GM 3400 Engine Replacement / Swap 1999 Alero / Grand Am 4 Door
Bought this 1999 Oldsmobile Alero For $800 with a known bad motor. Engine
was shot, knocked and burned antifreeze due to a bad head & intake gasket.
So, I found another 3400 from a wrecked Grand Am. Was smoked in the back.
Got the replacement engine for $500 (ouch). Put on a new intake manifold
gasket on the replacement motor as well. Pulled out the old engine and
replaced it with the new one. Runs like a champ now! These engines are
good, if the intake manifold gasket has been replaced. Put lots of
silicone to each edge of the gasket. Sealed up great! No smoking and no
leaks like these are natorious for.
Modified 2.8l V6
1986 Buick Century with 2.8L 60°V6 engine. Early testing of turbo intercooled speed-density engine management
system. Had Boost set to 8 PSI. Boost now at 13 PSI through tuning of
Video taken November of 2007.
Hint- the speedometer is in MPH (not kilometers) and reads to 120 MPH at
the peg. The Check Engine light is on because I have a Wideband AFR meter
installed in the Exhaust in place of
the oxygen sensor (for testing).
NOTE WELL that any resemblance to an actual public roadway is pure
co-incidence. This demonstration is an electronic simulation of a car
being tested. No actual traffic laws were broken and this video may NOT be
used to incriminate the owner of the car.