1987 Buick Century stalling due to E10 fuel?

Hi there,

Thank you for the donation,
The E10 fuel should be ok, as you said this may have been an existing problem, I would start with a scan to check for any unresolved fault codes and do a full tune, report your findings after doing this for more assistance if required,

mark (mhpautos)

Don't buy a scanner, I would either try and borrow one or get a work shop to do a scan, also a full tune may help if this has not been done as yet.

Mark (mhpautos)

Hi there,
At this point I will have to hand this post over to a new moderator, as I am in Australia and not sure about doing this as I have never seen one (we don't have tis car here) so far I have been able to work through the theory with you, if I could see it I would be able to work it out, normally with V6 engines you have to remove the in let manifold to access the rear plugs, I will ash this question on our private forum and get you an answer as soon as I can.

Mark (mhpautos)

The engine must be shifted forward to allow enough clearance for removing the spark plugs. There are two top motor mounts that can be relocated to do this.

Removed the two bolts attaching the engine to the mounts. If you look on the underside of these mounts, one or both of them will have an extra hole that can be used to hold the motor in place while it is shifted forward.

One inspection tip. The upper intake manifold where "2.8 multiport FI is printed tends to leak at the bolts. There are several small grommet that seal the bolts as they pass through the intake chamber. Check for leaks by spraying brake cleaner, throttle body/intake cleaner while the engine is idling steadily,(if it will!). A surge/engine revv following a spray indicates a leak.

Good luck,