the engines suddenly running like crap, now what?



the engines suddenly running like crap, now what?

Postby grumpyvette » January 8th, 2011, 11:19 am

if your engine suddenly starts running badly, the worst thing to do is ignore it hoping it will get better,
chances are excellent things will only get worse if symptoms are ignored,
you need to locate the cause of the problem before continuing to drive the car.
it might be as simple as a clogged fuel filter , but it may be detonation damage, a loose rocker,busted valve spring, cracked head,busted rocker stud,worn cam,loose timing chain, etc. that will rapidly destroy the engine if left to continue.


you drop back to basics and do a compression test/leak down test

viewtopic.php?f=44&t=881&p=8362&hilit=leakdown#p8362

verify your oil pressure readings and oil levels
check for coolant in the oil or leaks
watch your temperature gauge carefully
inspect your spark plugs

you do a vacuum leak test
viewtopic.php?f=50&t=821&p=1212&hilit=+vacuum+leak+propane#p1212

verify the valves are adjusted correctly and check ignition timing as a first step.

viewtopic.php?f=52&t=196

you cut open and inspect your oil filter
viewtopic.php?f=44&t=772&p=1122&hilit=+cutting+tool+filter#p1122

verify the fuel system flow and pressure
viewtopic.php?f=32&t=596

check obvious tune up problems
viewtopic.php?f=44&t=773

while your checking your valve train, check for weak or broken valve springs, more than one guys has broken a valve spring and wondered why the car runs like crap after entering valve float a few times, if you catch it early you may prevent dropping a valve and a huge expensive repair bill.

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read thru these threads and sub linked info

viewtopic.php?f=87&t=3183&p=8477&hilit=inspect+tool#p8477



http://www.aa1car.com/library/valve_spr ... gnosis.htm

viewtopic.php?f=50&t=903&p=10020&hilit=rope+adapter#p10020

http://www.carcraft.com/howto/ccrp_0801 ... index.html

viewtopic.php?f=52&t=181&p=7156&hilit=springs+beehive#p7156

viewtopic.php?f=52&t=1716&p=4248&hilit=+beehive+spring#p4248

viewtopic.php?f=52&t=3124&p=9141&hilit=+beehive+spring#p9141

viewtopic.php?f=52&t=663&p=911&hilit=+rockers+girdle#p911

viewtopic.php?f=52&t=401&p=8370&hilit=vortec+heads#p8370

http://sbftech.com/index.php/topic,15607.0.html
IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
grumpyvette

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