carlrock

hello I have a civic 4 cylinder that wont start has fuel and spark in time compression is 130 on 3 cylinder's 80 on 1 wont even try to fire with starting fluid. any ideas dropped the exhaust same thing pulled injectors has normal spray pattern.

GolNat

iTrader: (7)

Thread needs to be moved.


What did the plugs look like?

Any work just done on the car? Did it sit overnight and then wouldn't start one morning?

carlrock

plugs are new been sitting for days trying to find problem its not a hot start problem. someone else was chasing this problem before it came to shop.

sdaidoji

iTrader: (1)

yep, it's a 6th gen, not a 8th gen, nor it's a helpful DIY article either...

ezone

So you are working in a shop?
This car is in your shop?
What kind of shop is it?

carlrock

its a full repair shop been in the business 34 years its a friends shop, I don't work there im retired he just called me to see if I could help him out I was a tech for 32

ezone

Ah, ok.

130 is way low to me, if I do the compression test I expect 180+.
Are the plugs wet with gas?
Has it lost spark?



Got a scanner? Any codes?
What is the ECT temp when you crank it? Is the ECT reading accurate?

carlrock

no it never looses spark
plugs don't foul no codes 130 is low but you would think it would at least try to start ect is cold 70 in the am he tried starting fluid and no pop even checked timing belt is ok pulled injectors and they spray fine blue spark at plugs no codes its data looks good. dosnt make since

ezone

Plug gap is too small to check.
See if the spark will jump a gap of at least a half-inch.

Are the plugs WET with gas?

Is it really gasoline?
Contaminated fuel?
Diesel mixed in?


Oil the cylinders to restore compression?-- (engine got flooded)



Is the cam gear out of time by a couple teeth?
Is the bolt on the cam gear loose?
Verify TDC mark on the balancer is truly TDC --piston 1 at the top?

Checked ignition timing with a timing light? (I know it won't run, just check it while cranking)