The Stupid Engine Questions Thread

[Enginebuilder]

When I bought my 91 w/350 the prvious owner said it needed the heads rebuilt / replaced. I ran seafoam through it, Lots of smoke, but the part that bothered me was the black goo that spewed from where the manifolds connect to the y pipe. Anyone think I should be looking into a replacement engine or a set of heads?

The black goo that is leaking from the exhaust is the sludge buildup that came out of your engine because of the seafoam treatment. That you have so much sludge as to be leaking out of your exhaust is not a great sign, but I wouldn't automatically write off the engine because of it.

Before worrying about rebuilding or replacing the heads/engine, do yourself a favor and get a compression check done. If the compression seems off, in that it is too low across the board, or a few cylinders are too low, do a leak-down test to determine if the valves or piston rings are to blame.

If you don't have the tools/experience to do a compression test and or leak down test, a competent shop should be able to do both for you at a minimal cost. If you go this route, make sure the shop writes down the exact compression #'s for you, and post 'em up here.

 

[SkyHighColorado]

Are the Ac Delco rapid fire plugs any good for the TBI? they are like $35 and the regular delco's are $16

 

[blue96]

I'm experiencing a wierd electrical pulsation in the morning only:

http://i33.photobucket.com/albums/d...67C15E3-1251-000001A87AFE08EF_zps93bd51ea.mp4

 

[blue96]

I'm experiencing a wierd electrical pulsation in the morning only:

http://i33.photobucket.com/albums/d...67C15E3-1251-000001A87AFE08EF_zps93bd51ea.mp4

Ok, so the more throttle I give the more the lights dim.. Alternator checks good holds 14.4v, voltage regulator check ok and the battery is fresh.. Recently installed a new tensioner assembly as the former failed on me.. Could this be a plug wire arcing on metal or bad coil sucking amperage from the system? Perhaps a bad ground? I'm an electrician but haven't dug into it because I'm somewhere between sinusitis and bronchitis right now.. Any pointers? Similar Experiences?

 

[SkyHighColorado]

Ok, so the more throttle I give the more the lights dim.. Alternator checks good holds 14.4v, voltage regulator check ok and the battery is fresh.. Recently installed a new tensioner assembly as the former failed on me.. Could this be a plug wire arcing on metal or bad coil sucking amperage from the system? Perhaps a bad ground? I'm an electrician but haven't dug into it because I'm somewhere between sinusitis and bronchitis right now.. Any pointers? Similar Experiences?

probably a bad ground.....i have a similar pulsation but its only when i have turn signals on or other electrical things.
Also wanted to say i LOVE your white sn95....My user name is whitepony on sn95, but i havnt been on in years because my stang was wrecked Yours brings back a lot of memories.

 

[blue96]

I remember ya.. I'm White95 over there.. I probably tried to recruit you into the White Mustang Mafia LOL!! Thanks for the kudos, it's a never ending project and its looking quite sad right now but FAST lol

 

[chevyboy07]

95 silverado

I drive a 95 c1500 5.7 l 350. Heater core keeps going out. Is there anything that could be making it go out? head gasket? anything please help!!!!

 

[1997chevydriver]

I drive a 95 c1500 5.7 l 350. Heater core keeps going out. Is there anything that could be making it go out? head gasket? anything please help!!!!

What do you mean goin out? Clogged? Leaking? Are you putting in junkyard ones or new ones?

Sent from somewhere in MN

 

[slippy3002]

Has anyone ever got a programmable efi setup from summit for the older 95- TBI trucks to make them more compatible for upgrades?

 

[michael hurd]

I drive a 95 c1500 5.7 l 350. Heater core keeps going out. Is there anything that could be making it go out? head gasket? anything please help!!!!

If these are new cores that are failing, drop all the coolant, flush and install new coolant if it has not already been done, as well as clean all the grounds from the battery to frame, frame to engine block and so on. The coolant may be acting as a ground, conducting current.